bind/rpz2+rl-9.9.3-P1.patch

diff -r -u bin/named/client.c-orig bin/named/client.c
--- bin/named/client.c-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/named/client.c	2004-01-01 00:00:00.000000000 +0000
@@ -994,6 +994,11 @@
 	}
 	if (result != ISC_R_SUCCESS)
 		goto done;
+	/*
+	 * Stop after the question if TC was set for rate limiting.
+	 */
+	if ((client->message->flags & DNS_MESSAGEFLAG_TC) != 0)
+		goto renderend;
 	result = dns_message_rendersection(client->message,
 					   DNS_SECTION_ANSWER,
 					   DNS_MESSAGERENDER_PARTIAL |
@@ -1134,6 +1139,51 @@
 #endif
 
 	/*
+	 * Try to rate limit error responses.
+	 */
+	if (client->view != NULL && client->view->rrl != NULL) {
+		isc_boolean_t wouldlog;
+		char log_buf[DNS_RRL_LOG_BUF_LEN];
+		dns_rrl_result_t rrl_result;
+
+		INSIST(rcode != dns_rcode_noerror &&
+		       rcode != dns_rcode_nxdomain);
+		wouldlog = isc_log_wouldlog(ns_g_lctx, DNS_RRL_LOG_DROP);
+		rrl_result = dns_rrl(client->view, &client->peeraddr,
+				     TCP_CLIENT(client),
+				     dns_rdataclass_in, dns_rdatatype_none,
+				     NULL, result, client->now,
+				     wouldlog, log_buf, sizeof(log_buf));
+		if (rrl_result != DNS_RRL_RESULT_OK) {
+			/*
+			 * Log dropped errors in the query category
+			 * so that they are not lost in silence.
+			 * Starts of rate-limited bursts are logged in
+			 * NS_LOGCATEGORY_RRL.
+			 */
+			if (wouldlog) {
+				ns_client_log(client,
+					      NS_LOGCATEGORY_QUERY_EERRORS,
+					      NS_LOGMODULE_CLIENT,
+					      DNS_RRL_LOG_DROP,
+					      "%s", log_buf);
+			}
+			/*
+			 * Some error responses cannot be 'slipped',
+			 * so don't try to slip any error responses.
+			 */
+			if (!client->view->rrl->log_only) {
+				isc_stats_increment(ns_g_server->nsstats,
+						dns_nsstatscounter_ratedropped);
+				isc_stats_increment(ns_g_server->nsstats,
+						dns_nsstatscounter_dropped);
+				ns_client_next(client, DNS_R_DROP);
+				return;
+			}
+		}
+	}
+
+	/*
 	 * Message may be an in-progress reply that we had trouble
 	 * with, in which case QR will be set.  We need to clear QR before
 	 * calling dns_message_reply() to avoid triggering an assertion.
diff -r -u bin/named/config.c-orig bin/named/config.c
--- bin/named/config.c-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/named/config.c	2004-01-01 00:00:00.000000000 +0000
@@ -228,6 +228,13 @@
 	notify no;\n\
 	allow-new-zones no;\n\
 \n\
+	# Prevent use of this zone in DNS amplified reflection DoS attacks\n\
+	rate-limit {\n\
+		responses-per-second 3;\n\
+		slip 0;\n\
+		min-table-size 10;\n\
+	};\n\
+\n\
 	zone \"version.bind\" chaos {\n\
 		type master;\n\
 		database \"_builtin version\";\n\
diff -r -u bin/named/include/named/query.h-orig bin/named/include/named/query.h
--- bin/named/include/named/query.h-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/named/include/named/query.h	2004-01-01 00:00:00.000000000 +0000
@@ -85,6 +85,7 @@
 #define NS_QUERYATTR_CACHEACLOK		0x2000
 #define NS_QUERYATTR_DNS64		0x4000
 #define NS_QUERYATTR_DNS64EXCLUDE	0x8000
+#define NS_QUERYATTR_RRL_CHECKED	0x10000
 
 
 isc_result_t
diff -r -u bin/named/include/named/server.h-orig bin/named/include/named/server.h
--- bin/named/include/named/server.h-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/named/include/named/server.h	2004-01-01 00:00:00.000000000 +0000
@@ -167,7 +167,10 @@
 
 	dns_nsstatscounter_rpz_rewrites = 36,
 
-	dns_nsstatscounter_max = 37
+	dns_nsstatscounter_ratedropped = 37,
+	dns_nsstatscounter_rateslipped = 38,
+
+	dns_nsstatscounter_max = 39
 };
 
 void
diff -r -u bin/named/query.c-orig bin/named/query.c
--- bin/named/query.c-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/named/query.c	2004-01-01 00:00:00.000000000 +0000
@@ -193,7 +193,7 @@
 #ifdef NEWSTATS
 	/* Do query type statistics
 	 *
-	 * We only increment per-type if we're using the authoriative
+	 * We only increment per-type if we're using the authoritative
 	 * answer counter, preventing double-counting.
 	 */
 	if (counter == dns_nsstatscounter_authans) {
@@ -879,11 +879,11 @@
 static void
 rpz_log_rewrite(ns_client_t *client, isc_boolean_t disabled,
 		dns_rpz_policy_t policy, dns_rpz_type_t type,
-		dns_zone_t *zone, dns_name_t *rpz_qname)
+		dns_zone_t *p_zone, dns_name_t *p_name)
 {
 	isc_stats_t *zonestats;
 	char qname_buf[DNS_NAME_FORMATSIZE];
-	char rpz_qname_buf[DNS_NAME_FORMATSIZE];
+	char p_name_buf[DNS_NAME_FORMATSIZE];
 
 	/*
 	 * Count enabled rewrites in the global counter.
@@ -893,8 +893,8 @@
 		isc_stats_increment(ns_g_server->nsstats,
 				    dns_nsstatscounter_rpz_rewrites);
 	}
-	if (zone != NULL) {
-		zonestats = dns_zone_getrequeststats(zone);
+	if (p_zone != NULL) {
+		zonestats = dns_zone_getrequeststats(p_zone);
 		if (zonestats != NULL)
 			isc_stats_increment(zonestats,
 					    dns_nsstatscounter_rpz_rewrites);
@@ -904,22 +904,21 @@
 		return;
 
 	dns_name_format(client->query.qname, qname_buf, sizeof(qname_buf));
-	dns_name_format(rpz_qname, rpz_qname_buf, sizeof(rpz_qname_buf));
+	dns_name_format(p_name, p_name_buf, sizeof(p_name_buf));
 
 	ns_client_log(client, DNS_LOGCATEGORY_RPZ, NS_LOGMODULE_QUERY,
 		      DNS_RPZ_INFO_LEVEL, "%srpz %s %s rewrite %s via %s",
 		      disabled ? "disabled " : "",
 		      dns_rpz_type2str(type), dns_rpz_policy2str(policy),
-		      qname_buf, rpz_qname_buf);
+		      qname_buf, p_name_buf);
 }
 
 static void
-rpz_log_fail(ns_client_t *client, int level,
-	     dns_rpz_type_t rpz_type, dns_name_t *name,
-	     const char *str, isc_result_t result)
+rpz_log_fail(ns_client_t *client, int level, dns_name_t *p_name,
+	     dns_rpz_type_t rpz_type, const char *str, isc_result_t result)
 {
-	char namebuf1[DNS_NAME_FORMATSIZE];
-	char namebuf2[DNS_NAME_FORMATSIZE];
+	char qnamebuf[DNS_NAME_FORMATSIZE];
+	char p_namebuf[DNS_NAME_FORMATSIZE];
 
 	if (!isc_log_wouldlog(ns_g_lctx, level))
 		return;
@@ -927,44 +926,44 @@
 	/*
 	 * bin/tests/system/rpz/tests.sh looks for "rpz.*failed".
 	 */
-	dns_name_format(client->query.qname, namebuf1, sizeof(namebuf1));
-	dns_name_format(name, namebuf2, sizeof(namebuf2));
+	dns_name_format(client->query.qname, qnamebuf, sizeof(qnamebuf));
+	dns_name_format(p_name, p_namebuf, sizeof(p_namebuf));
 	ns_client_log(client, NS_LOGCATEGORY_QUERY_EERRORS,
 		      NS_LOGMODULE_QUERY, level,
 		      "rpz %s rewrite %s via %s %sfailed: %s",
 		      dns_rpz_type2str(rpz_type),
-		      namebuf1, namebuf2, str, isc_result_totext(result));
+		      qnamebuf, p_namebuf, str, isc_result_totext(result));
 }
 
 /*
  * Get a policy rewrite zone database.
  */
 static isc_result_t
-rpz_getdb(ns_client_t *client, dns_rpz_type_t rpz_type, dns_name_t *rpz_qname,
+rpz_getdb(ns_client_t *client, dns_name_t *p_name, dns_rpz_type_t rpz_type,
 	  dns_zone_t **zonep, dns_db_t **dbp, dns_dbversion_t **versionp)
 {
-	char namebuf1[DNS_NAME_FORMATSIZE];
-	char namebuf2[DNS_NAME_FORMATSIZE];
+	char qnamebuf[DNS_NAME_FORMATSIZE];
+	char p_namebuf[DNS_NAME_FORMATSIZE];
 	dns_dbversion_t *rpz_version = NULL;
 	isc_result_t result;
 
-	result = query_getzonedb(client, rpz_qname, dns_rdatatype_any,
+	result = query_getzonedb(client, p_name, dns_rdatatype_any,
 				 DNS_GETDB_IGNOREACL, zonep, dbp, &rpz_version);
 	if (result == ISC_R_SUCCESS) {
 		if (isc_log_wouldlog(ns_g_lctx, DNS_RPZ_DEBUG_LEVEL2)) {
-			dns_name_format(client->query.qname, namebuf1,
-					sizeof(namebuf1));
-			dns_name_format(rpz_qname, namebuf2, sizeof(namebuf2));
+			dns_name_format(client->query.qname, qnamebuf,
+					sizeof(qnamebuf));
+			dns_name_format(p_name, p_namebuf, sizeof(p_namebuf));
 			ns_client_log(client, DNS_LOGCATEGORY_RPZ,
 				      NS_LOGMODULE_QUERY, DNS_RPZ_DEBUG_LEVEL2,
 				      "try rpz %s rewrite %s via %s",
 				      dns_rpz_type2str(rpz_type),
-				      namebuf1, namebuf2);
+				      qnamebuf, p_namebuf);
 		}
 		*versionp = rpz_version;
 		return (ISC_R_SUCCESS);
 	}
-	rpz_log_fail(client, DNS_RPZ_ERROR_LEVEL, rpz_type, rpz_qname,
+	rpz_log_fail(client, DNS_RPZ_ERROR_LEVEL, p_name, rpz_type,
 		     "query_getzonedb() ", result);
 	return (result);
 }
@@ -3913,7 +3912,7 @@
 		dns_rdataset_disassociate(*rdatasetp);
 }
 
-static void
+static inline void
 rpz_match_clear(dns_rpz_st_t *st)
 {
 	rpz_clean(&st->m.zone, &st->m.db, &st->m.node, &st->m.rdataset);
@@ -3921,16 +3920,16 @@
 }
 
 static inline isc_result_t
-rpz_ready(ns_client_t *client, dns_zone_t **zonep, dns_db_t **dbp,
-	  dns_dbnode_t **nodep, dns_rdataset_t **rdatasetp)
+rpz_ready(ns_client_t *client, dns_rdataset_t **rdatasetp)
 {
 	REQUIRE(rdatasetp != NULL);
 
-	rpz_clean(zonep, dbp, nodep, rdatasetp);
 	if (*rdatasetp == NULL) {
 		*rdatasetp = query_newrdataset(client);
 		if (*rdatasetp == NULL)
 			return (DNS_R_SERVFAIL);
+	} else if (dns_rdataset_isassociated(*rdatasetp)) {
+		dns_rdataset_disassociate(*rdatasetp);
 	}
 	return (ISC_R_SUCCESS);
 }
@@ -3959,13 +3958,83 @@
 	st->m.policy = DNS_RPZ_POLICY_MISS;
 }
 
+static dns_rpz_zbits_t
+rpz_get_zbits(ns_client_t *client,
+	      dns_rdatatype_t ip_type, dns_rpz_type_t rpz_type)
+{
+	dns_rpz_zones_t *rpzs;
+	dns_rpz_st_t *st;
+	dns_rpz_zbits_t zbits;
+
+	rpzs = client->view->rpzs;
+
+	switch (rpz_type) {
+	case DNS_RPZ_TYPE_CLIENT_IP:
+		zbits = rpzs->have.client_ip;
+		break;
+	case DNS_RPZ_TYPE_QNAME:
+		zbits = rpzs->have.qname;
+		break;
+	case DNS_RPZ_TYPE_IP:
+		if (ip_type == dns_rdatatype_a) {
+			zbits = rpzs->have.ipv4;
+		} else if (ip_type == dns_rdatatype_aaaa) {
+			zbits = rpzs->have.ipv6;
+		} else {
+			zbits = rpzs->have.ip;
+		}
+		break;
+	case DNS_RPZ_TYPE_NSDNAME:
+		zbits = rpzs->have.nsdname;
+		break;
+	case DNS_RPZ_TYPE_NSIP:
+		if (ip_type == dns_rdatatype_a) {
+			zbits = rpzs->have.nsipv4;
+		} else if (ip_type == dns_rdatatype_aaaa) {
+			zbits = rpzs->have.nsipv6;
+		} else {
+			zbits = rpzs->have.nsip;
+		}
+		break;
+	default:
+		INSIST(0);
+		break;
+	}
+
+	st = client->query.rpz_st;
+
+	/*
+	 * Choose
+	 *	the earliest configured policy zone (rpz->num)
+	 *	QNAME over IP over NSDNAME over NSIP (rpz_type)
+	 *	the smallest name,
+	 *	the longest IP address prefix,
+	 *	the lexically smallest address.
+	 */
+	if (st->m.policy != DNS_RPZ_POLICY_MISS) {
+		if (st->m.type >= rpz_type) {
+			zbits &= DNS_RPZ_ZMASK(st->m.rpz->num);
+		} else{
+			zbits &= DNS_RPZ_ZMASK(st->m.rpz->num) >> 1;
+		}
+	}
+
+	/*
+	 * If the client wants recursion, allow only compatible policies.
+	 */
+	if (!RECURSIONOK(client))
+		zbits &= rpzs->p.no_rd_ok;
+
+	return (zbits);
+}
+
 /*
- * Get NS, A, or AAAA rrset for response policy zone checks.
+ * Get an NS, A, or AAAA rrset related to the response for the client
+ * to check the contents of that rrset for hits by eligible policy zones.
  */
 static isc_result_t
-rpz_rrset_find(ns_client_t *client, dns_rpz_type_t rpz_type,
-	       dns_name_t *name, dns_rdatatype_t type,
-	       dns_db_t **dbp, dns_dbversion_t *version,
+rpz_rrset_find(ns_client_t *client, dns_name_t *name, dns_rdatatype_t type,
+	       dns_rpz_type_t rpz_type, dns_db_t **dbp, dns_dbversion_t *version,
 	       dns_rdataset_t **rdatasetp, isc_boolean_t resuming)
 {
 	dns_rpz_st_t *st;
@@ -3977,15 +4046,13 @@
 	dns_clientinfomethods_t cm;
 	dns_clientinfo_t ci;
 
-	dns_clientinfomethods_init(&cm, ns_client_sourceip);
-	dns_clientinfo_init(&ci, client);
-
 	st = client->query.rpz_st;
 	if ((st->state & DNS_RPZ_RECURSING) != 0) {
 		INSIST(st->r.r_type == type);
 		INSIST(dns_name_equal(name, st->r_name));
 		INSIST(*rdatasetp == NULL ||
 		       !dns_rdataset_isassociated(*rdatasetp));
+		INSIST(*dbp == NULL);
 		st->state &= ~DNS_RPZ_RECURSING;
 		*dbp = st->r.db;
 		st->r.db = NULL;
@@ -3995,16 +4062,15 @@
 		st->r.r_rdataset = NULL;
 		result = st->r.r_result;
 		if (result == DNS_R_DELEGATION) {
-			rpz_log_fail(client, DNS_RPZ_ERROR_LEVEL,
-				     rpz_type, name,
-				     "rpz_rrset_find(1) ", result);
+			rpz_log_fail(client, DNS_RPZ_ERROR_LEVEL, name,
+				     rpz_type, "rpz_rrset_find(1) ", result);
 			st->m.policy = DNS_RPZ_POLICY_ERROR;
 			result = DNS_R_SERVFAIL;
 		}
 		return (result);
 	}
 
-	result = rpz_ready(client, NULL, NULL, NULL, rdatasetp);
+	result = rpz_ready(client, rdatasetp);
 	if (result != ISC_R_SUCCESS) {
 		st->m.policy = DNS_RPZ_POLICY_ERROR;
 		return (result);
@@ -4019,9 +4085,8 @@
 		result = query_getdb(client, name, type, 0, &zone, dbp,
 				     &version, &is_zone);
 		if (result != ISC_R_SUCCESS) {
-			rpz_log_fail(client, DNS_RPZ_ERROR_LEVEL,
-				     rpz_type, name,
-				     "rpz_rrset_find(2) ", result);
+			rpz_log_fail(client, DNS_RPZ_ERROR_LEVEL, name,
+				     rpz_type, "rpz_rrset_find(2) ", result);
 			st->m.policy = DNS_RPZ_POLICY_ERROR;
 			if (zone != NULL)
 				dns_zone_detach(&zone);
@@ -4034,6 +4099,8 @@
 	node = NULL;
 	dns_fixedname_init(&fixed);
 	found = dns_fixedname_name(&fixed);
+	dns_clientinfomethods_init(&cm, ns_client_sourceip);
+	dns_clientinfo_init(&ci, client);
 	result = dns_db_findext(*dbp, name, version, type, DNS_DBFIND_GLUEOK,
 				client->now, &node, found,
 				&cm, &ci, *rdatasetp, NULL);
@@ -4072,177 +4139,97 @@
 }
 
 /*
- * Check the IP address in an A or AAAA rdataset against
- * the IP or NSIP response policy rules of a view.
+ * Compute a policy owner name, p_name, in a policy zone given the needed
+ *	policy type and the trigger name.
  */
 static isc_result_t
-rpz_rewrite_ip(ns_client_t *client, dns_rdataset_t *rdataset,
-	       dns_rpz_type_t rpz_type)
-{
-	dns_rpz_st_t *st;
-	dns_dbversion_t *version;
-	dns_zone_t *zone;
-	dns_db_t *db;
-	dns_rpz_zone_t *rpz;
+rpz_get_p_name(ns_client_t *client, dns_name_t *p_name,
+	       dns_rpz_zone_t *rpz, dns_rpz_type_t rpz_type,
+	       dns_name_t *trig_name)
+{
+	dns_offsets_t prefix_offsets;
+	dns_name_t prefix, *suffix;
+	unsigned int first, labels;
 	isc_result_t result;
 
-	st = client->query.rpz_st;
-	if (st->m.rdataset == NULL) {
-		st->m.rdataset = query_newrdataset(client);
-		if (st->m.rdataset == NULL)
-			return (DNS_R_SERVFAIL);
-	}
-	zone = NULL;
-	db = NULL;
-	for (rpz = ISC_LIST_HEAD(client->view->rpz_zones);
-	     rpz != NULL;
-	     rpz = ISC_LIST_NEXT(rpz, link)) {
-		if (!RECURSIONOK(client) && rpz->recursive_only)
-			continue;
-
-		/*
-		 * Do not check policy zones that cannot replace a policy
-		 * already known to match.
-		 */
-		if (st->m.policy != DNS_RPZ_POLICY_MISS) {
-			if (st->m.rpz->num < rpz->num)
-				break;
-			if (st->m.rpz->num == rpz->num &&
-			    st->m.type < rpz_type)
-				continue;
-		}
-
-		/*
-		 * Find the database for this policy zone to get its radix tree.
-		 */
-		version = NULL;
-		result = rpz_getdb(client, rpz_type, &rpz->origin,
-				   &zone, &db, &version);
-		if (result != ISC_R_SUCCESS) {
-			rpz_clean(&zone, &db, NULL, NULL);
-			continue;
-		}
-		/*
-		 * Look for a better (e.g. longer prefix) hit for an IP address
-		 * in this rdataset in this radix tree than than the previous
-		 * hit, if any.  Note the domain name and quality of the
-		 * best hit.
-		 */
-		dns_db_rpz_findips(rpz, rpz_type, zone, db, version,
-				   rdataset, st, client->query.rpz_st->qname);
-		rpz_clean(&zone, &db, NULL, NULL);
-	}
-	return (ISC_R_SUCCESS);
-}
-
-/*
- * Look for an A or AAAA rdataset
- * and check for IP or NSIP rewrite policy rules.
- */
-static isc_result_t
-rpz_rewrite_rrset(ns_client_t *client, dns_rpz_type_t rpz_type,
-		  dns_rdatatype_t type, dns_name_t *name,
-		  dns_db_t **dbp, dns_dbversion_t *version,
-		  dns_rdataset_t **rdatasetp, isc_boolean_t resuming)
-{
-	isc_result_t result;
-
-	result = rpz_rrset_find(client, rpz_type, name, type, dbp, version,
-				rdatasetp, resuming);
-	switch (result) {
-	case ISC_R_SUCCESS:
-	case DNS_R_GLUE:
-	case DNS_R_ZONECUT:
-		result = rpz_rewrite_ip(client, *rdatasetp, rpz_type);
+	/*
+	 * The policy owner name consists of a suffix depending on the type
+	 * and policy zone and a prefix that is the longest possible string
+	 * from the trigger name that keesp the resulting policy owner name
+	 * from being too long.
+	 */
+	switch (rpz_type) {
+	case DNS_RPZ_TYPE_CLIENT_IP:
+		suffix = &rpz->client_ip;
 		break;
-	case DNS_R_EMPTYNAME:
-	case DNS_R_EMPTYWILD:
-	case DNS_R_NXDOMAIN:
-	case DNS_R_NCACHENXDOMAIN:
-	case DNS_R_NXRRSET:
-	case DNS_R_NCACHENXRRSET:
-	case ISC_R_NOTFOUND:
-		result = ISC_R_SUCCESS;
+	case DNS_RPZ_TYPE_QNAME:
+		suffix = &rpz->origin;
 		break;
-	case DNS_R_DELEGATION:
-	case DNS_R_DUPLICATE:
-	case DNS_R_DROP:
+	case DNS_RPZ_TYPE_IP:
+		suffix = &rpz->ip;
 		break;
-	case DNS_R_CNAME:
-	case DNS_R_DNAME:
-		rpz_log_fail(client, DNS_RPZ_DEBUG_LEVEL1, rpz_type,
-			     name, "NS address rewrite rrset ", result);
-		result = ISC_R_SUCCESS;
+	case DNS_RPZ_TYPE_NSDNAME:
+		suffix = &rpz->nsdname;
 		break;
-	default:
-		if (client->query.rpz_st->m.policy != DNS_RPZ_POLICY_ERROR) {
-			client->query.rpz_st->m.policy = DNS_RPZ_POLICY_ERROR;
-			rpz_log_fail(client, DNS_RPZ_ERROR_LEVEL, rpz_type,
-				     name, "NS address rewrite rrset ", result);
-		}
+	case DNS_RPZ_TYPE_NSIP:
+		suffix = &rpz->nsip;
 		break;
+	default:
+		INSIST(0);
 	}
-	return (result);
-}
-
-/*
- * Look for both A and AAAA rdatasets
- * and check for IP or NSIP rewrite policy rules.
- * Look only for addresses that will be in the ANSWER section
- * when checking for IP rules.
- */
-static isc_result_t
-rpz_rewrite_rrsets(ns_client_t *client, dns_rpz_type_t rpz_type,
-		   dns_name_t *name, dns_rdatatype_t type,
-		   dns_rdataset_t **rdatasetp, isc_boolean_t resuming)
-{
-	dns_rpz_st_t *st;
-	dns_dbversion_t *version;
-	dns_db_t *ipdb;
-	isc_result_t result;
 
-	st = client->query.rpz_st;
-	version = NULL;
-	ipdb = NULL;
-	if ((st->state & DNS_RPZ_DONE_IPv4) == 0 &&
-	    ((rpz_type == DNS_RPZ_TYPE_NSIP) ?
-	     (st->state & DNS_RPZ_HAVE_NSIPv4) :
-	     (st->state & DNS_RPZ_HAVE_IP)) != 0 &&
-	    (type == dns_rdatatype_any || type == dns_rdatatype_a)) {
-		result = rpz_rewrite_rrset(client, rpz_type, dns_rdatatype_a,
-					   name, &ipdb, version, rdatasetp,
-					   resuming);
+	/*
+	 * Start with relative version of the full trigger name,
+	 * and trim enough allow the addition of the suffix.
+	 */
+	dns_name_init(&prefix, prefix_offsets);
+	labels = dns_name_countlabels(trig_name);
+	first = 0;
+	for (;;) {
+		dns_name_getlabelsequence(trig_name, first, labels-first-1,
+					  &prefix);
+		result = dns_name_concatenate(&prefix, suffix, p_name, NULL);
 		if (result == ISC_R_SUCCESS)
-			st->state |= DNS_RPZ_DONE_IPv4;
-	} else {
-		result = ISC_R_SUCCESS;
-	}
-	if (result == ISC_R_SUCCESS &&
-	    ((rpz_type == DNS_RPZ_TYPE_NSIP) ?
-	     (st->state & DNS_RPZ_HAVE_NSIPv6) :
-	     (st->state & DNS_RPZ_HAVE_IP)) != 0 &&
-	    (type == dns_rdatatype_any || type == dns_rdatatype_aaaa)) {
-		result = rpz_rewrite_rrset(client, rpz_type, dns_rdatatype_aaaa,
-					   name, &ipdb, version, rdatasetp,
-					   resuming);
+			return (ISC_R_SUCCESS);
+		INSIST(result == DNS_R_NAMETOOLONG);
+		/*
+		 * Trim the trigger name until the combination is not too long.
+		 */
+		if (labels-first < 2) {
+			rpz_log_fail(client, DNS_RPZ_ERROR_LEVEL, suffix,
+				     rpz_type, "concatentate() ", result);
+			return (ISC_R_FAILURE);
+		}
+		/*
+		 * Complain once about trimming the trigger name.
+		 */
+		if (first == 0) {
+			rpz_log_fail(client, DNS_RPZ_DEBUG_LEVEL1, suffix,
+				     rpz_type, "concatentate() ", result);
+		}
+		++first;
 	}
-	if (ipdb != NULL)
-		dns_db_detach(&ipdb);
-	return (result);
 }
 
 /*
- * Get the rrset from a response policy zone.
+ * Look in policy zone rpz for a policy of rpz_type by p_name.
+ * The self-name (usually the client qname or an NS name) is compared with
+ * the target of a CNAME policy for the old style passthru encoding.
+ * If found, the policy is recorded in *zonep, *dbp, *versionp, *nodep,
+ * *rdatasetp, and *policyp.
+ * The target DNS type, qtype, chooses the best rdataset for *rdatasetp.
+ * The caller must decide if the found policy is most suitable, including
+ * better than a previously found policy.
+ * If it is best, the caller records it in client->query.rpz_st->m.
  */
 static isc_result_t
-rpz_find(ns_client_t *client, dns_rdatatype_t qtype, dns_name_t *qnamef,
-	 dns_name_t *sname, dns_rpz_zone_t *rpz, dns_rpz_type_t rpz_type,
-	 dns_zone_t **zonep, dns_db_t **dbp, dns_dbversion_t **versionp,
-	 dns_dbnode_t **nodep, dns_rdataset_t **rdatasetp,
-	 dns_rpz_policy_t *policyp)
+rpz_find_p(ns_client_t *client, dns_name_t *self_name, dns_rdatatype_t qtype,
+	   dns_name_t *p_name, dns_rpz_zone_t *rpz, dns_rpz_type_t rpz_type,
+	   dns_zone_t **zonep, dns_db_t **dbp, dns_dbversion_t **versionp,
+	   dns_dbnode_t **nodep, dns_rdataset_t **rdatasetp,
+	   dns_rpz_policy_t *policyp)
 {
-	dns_rpz_policy_t policy;
-	dns_fixedname_t fixed;
+	dns_fixedname_t foundf;
 	dns_name_t *found;
 	isc_result_t result;
 	dns_clientinfomethods_t cm;
@@ -4250,31 +4237,28 @@
 
 	REQUIRE(nodep != NULL);
 
-	dns_clientinfomethods_init(&cm, ns_client_sourceip);
-	dns_clientinfo_init(&ci, client);
-
-	result = rpz_ready(client, zonep, dbp, nodep, rdatasetp);
-	if (result != ISC_R_SUCCESS) {
-		*policyp = DNS_RPZ_POLICY_ERROR;
-		return (result);
-	}
-
 	/*
-	 * Try to get either a CNAME or the type of record demanded by the
+	 * Try to find either a CNAME or the type of record demanded by the
 	 * request from the policy zone.
 	 */
+	rpz_clean(zonep, dbp, nodep, rdatasetp);
+	result = rpz_ready(client, rdatasetp);
+	if (result != ISC_R_SUCCESS)
+		return (DNS_R_SERVFAIL);
 	*versionp = NULL;
-	result = rpz_getdb(client, rpz_type, qnamef, zonep, dbp, versionp);
-	if (result != ISC_R_SUCCESS) {
-		*policyp = DNS_RPZ_POLICY_MISS;
+	result = rpz_getdb(client, p_name, rpz_type, zonep, dbp, versionp);
+	if (result != ISC_R_SUCCESS)
 		return (DNS_R_NXDOMAIN);
-	}
-
-	dns_fixedname_init(&fixed);
-	found = dns_fixedname_name(&fixed);
-	result = dns_db_findext(*dbp, qnamef, *versionp, dns_rdatatype_any, 0,
+	dns_fixedname_init(&foundf);
+	found = dns_fixedname_name(&foundf);
+	dns_clientinfomethods_init(&cm, ns_client_sourceip);
+	dns_clientinfo_init(&ci, client);
+	result = dns_db_findext(*dbp, p_name, *versionp, dns_rdatatype_any, 0,
 				client->now, nodep, found, &cm, &ci,
 				*rdatasetp, NULL);
+	/*
+	 * Choose the best rdataset if we found something.
+	 */
 	if (result == ISC_R_SUCCESS) {
 		dns_rdatasetiter_t *rdsiter;
 
@@ -4282,10 +4266,8 @@
 		result = dns_db_allrdatasets(*dbp, *nodep, *versionp, 0,
 					     &rdsiter);
 		if (result != ISC_R_SUCCESS) {
-			dns_db_detachnode(*dbp, nodep);
-			rpz_log_fail(client, DNS_RPZ_ERROR_LEVEL, rpz_type,
-				     qnamef, "allrdatasets() ", result);
-			*policyp = DNS_RPZ_POLICY_ERROR;
+			rpz_log_fail(client, DNS_RPZ_ERROR_LEVEL, p_name,
+				     rpz_type, "allrdatasets() ", result);
 			return (DNS_R_SERVFAIL);
 		}
 		for (result = dns_rdatasetiter_first(rdsiter);
@@ -4301,9 +4283,8 @@
 		if (result != ISC_R_SUCCESS) {
 			if (result != ISC_R_NOMORE) {
 				rpz_log_fail(client, DNS_RPZ_ERROR_LEVEL,
-					     rpz_type, qnamef, "rdatasetiter ",
-					     result);
-				*policyp = DNS_RPZ_POLICY_ERROR;
+					     p_name, rpz_type,
+					     "rdatasetiter ", result);
 				return (DNS_R_SERVFAIL);
 			}
 			/*
@@ -4318,7 +4299,7 @@
 			    qtype == dns_rdatatype_sig)
 				result = DNS_R_NXRRSET;
 			else
-				result = dns_db_findext(*dbp, qnamef, *versionp,
+				result = dns_db_findext(*dbp, p_name, *versionp,
 							qtype, 0, client->now,
 							nodep, found, &cm, &ci,
 							*rdatasetp, NULL);
@@ -4327,162 +4308,477 @@
 	switch (result) {
 	case ISC_R_SUCCESS:
 		if ((*rdatasetp)->type != dns_rdatatype_cname) {
-			policy = DNS_RPZ_POLICY_RECORD;
+			*policyp = DNS_RPZ_POLICY_RECORD;
 		} else {
-			policy = dns_rpz_decode_cname(rpz, *rdatasetp, sname);
-			if ((policy == DNS_RPZ_POLICY_RECORD ||
-			     policy == DNS_RPZ_POLICY_WILDCNAME) &&
+			*policyp = dns_rpz_decode_cname(rpz, *rdatasetp,
+							self_name);
+			if ((*policyp == DNS_RPZ_POLICY_RECORD ||
+			     *policyp == DNS_RPZ_POLICY_WILDCNAME) &&
 			    qtype != dns_rdatatype_cname &&
 			    qtype != dns_rdatatype_any)
-				result = DNS_R_CNAME;
+				return (DNS_R_CNAME);
 		}
-		break;
+		return (ISC_R_SUCCESS);
 	case DNS_R_NXRRSET:
-		policy = DNS_RPZ_POLICY_NODATA;
-		break;
+		*policyp = DNS_RPZ_POLICY_NODATA;
+		return (result);
 	case DNS_R_DNAME:
 		/*
 		 * DNAME policy RRs have very few if any uses that are not
-		 * better served with simple wildcards.  Making the work would
+		 * better served with simple wildcards.  Making them work would
 		 * require complications to get the number of labels matched
 		 * in the name or the found name to the main DNS_R_DNAME case
-		 * in query_find().
-		 */
-		dns_rdataset_disassociate(*rdatasetp);
-		dns_db_detachnode(*dbp, nodep);
-		/*
-		 * Fall through to treat it as a miss.
+		 * in query_find().  The domain also does not appear in the
+		 * summary database at the right level, so this happens only
+		 * with a single policy zone when we have no summary database.
+		 * Treat it as a miss.
 		 */
 	case DNS_R_NXDOMAIN:
 	case DNS_R_EMPTYNAME:
-		/*
-		 * If we don't get a qname hit,
-		 * see if it is worth looking for other types.
-		 */
-		(void)dns_db_rpz_enabled(*dbp, client->query.rpz_st);
-		dns_db_detach(dbp);
-		dns_zone_detach(zonep);
-		result = DNS_R_NXDOMAIN;
-		policy = DNS_RPZ_POLICY_MISS;
-		break;
+		return (DNS_R_NXDOMAIN);
 	default:
-		dns_db_detach(dbp);
-		dns_zone_detach(zonep);
-		rpz_log_fail(client, DNS_RPZ_ERROR_LEVEL, rpz_type, qnamef,
+		rpz_log_fail(client, DNS_RPZ_ERROR_LEVEL, p_name, rpz_type,
 			     "", result);
 		return (DNS_R_SERVFAIL);
 	}
+}
 
-	*policyp = policy;
-	return (result);
+static void
+rpz_save_p(dns_rpz_st_t *st, dns_rpz_zone_t *rpz, dns_rpz_type_t rpz_type,
+	   dns_rpz_policy_t policy, dns_name_t *p_name, dns_rpz_prefix_t prefix,
+	   isc_result_t result, dns_zone_t **zonep, dns_db_t **dbp,
+	   dns_dbnode_t **nodep, dns_rdataset_t **rdatasetp,
+	   dns_dbversion_t *version)
+{
+	dns_rdataset_t *trdataset;
+
+	rpz_match_clear(st);
+	st->m.rpz = rpz;
+	st->m.type = rpz_type;
+	st->m.policy = policy;
+	dns_name_copy(p_name, st->p_name, NULL);
+	st->m.prefix = prefix;
+	st->m.result = result;
+	st->m.zone = *zonep;
+	*zonep = NULL;
+	st->m.db = *dbp;
+	*dbp = NULL;
+	st->m.node = *nodep;
+	*nodep = NULL;
+	if (*rdatasetp != NULL && dns_rdataset_isassociated(*rdatasetp)) {
+		/*
+		 * Save the replacement rdataset from the policy
+		 * and make the previous replacement rdataset scratch.
+		 */
+		trdataset = st->m.rdataset;
+		st->m.rdataset = *rdatasetp;
+		*rdatasetp = trdataset;
+		st->m.ttl = ISC_MIN(st->m.rdataset->ttl, rpz->max_policy_ttl);
+	} else {
+		st->m.ttl = ISC_MIN(DNS_RPZ_TTL_DEFAULT, rpz->max_policy_ttl);
+	}
+	st->m.version = version;
 }
 
 /*
- * Build and look for a QNAME or NSDNAME owner name in a response policy zone.
+ * Check this address in every eligible policy zone.
  */
 static isc_result_t
-rpz_rewrite_name(ns_client_t *client, dns_rdatatype_t qtype, dns_name_t *qname,
-		 dns_rpz_type_t rpz_type, dns_rdataset_t **rdatasetp)
+rpz_rewrite_ip(ns_client_t *client, const isc_netaddr_t *netaddr,
+	       dns_rdatatype_t qtype, dns_rpz_type_t rpz_type,
+	       dns_rpz_zbits_t zbits, dns_rdataset_t **p_rdatasetp)
 {
+	dns_rpz_zones_t *rpzs;
 	dns_rpz_st_t *st;
 	dns_rpz_zone_t *rpz;
-	dns_fixedname_t prefixf, rpz_qnamef;
-	dns_name_t *prefix, *suffix, *rpz_qname;
-	dns_zone_t *zone;
-	dns_db_t *db;
-	dns_dbversion_t *version;
-	dns_dbnode_t *node;
+	dns_rpz_prefix_t prefix;
+	dns_rpz_num_t rpz_num;
+	dns_fixedname_t ip_namef, p_namef;
+	dns_name_t *ip_name, *p_name;
+	dns_zone_t *p_zone;
+	dns_db_t *p_db;
+	dns_dbversion_t *p_version;
+	dns_dbnode_t *p_node;
 	dns_rpz_policy_t policy;
-	unsigned int labels;
 	isc_result_t result;
 
-	st = client->query.rpz_st;
-	zone = NULL;
-	db = NULL;
-	node = NULL;
+	dns_fixedname_init(&ip_namef);
+	ip_name = dns_fixedname_name(&ip_namef);
 
-	for (rpz = ISC_LIST_HEAD(client->view->rpz_zones);
-	     rpz != NULL;
-	     rpz = ISC_LIST_NEXT(rpz, link)) {
-		if (!RECURSIONOK(client) && rpz->recursive_only)
-			continue;
+	p_zone = NULL;
+	p_db = NULL;
+	p_node = NULL;
+
+	rpzs = client->view->rpzs;
+	st = client->query.rpz_st;
+	while (zbits != 0) {
+		rpz_num = dns_rpz_find_ip(rpzs, rpz_type, zbits, netaddr,
+					  ip_name, &prefix);
+		if (rpz_num == DNS_RPZ_INVALID_NUM)
+			break;
+		zbits &= (DNS_RPZ_ZMASK(rpz_num) >> 1);
 
 		/*
-		 * Do not check policy zones that cannot replace a policy
-		 * already known to match.
+		 * Do not try applying policy zones that cannot replace a
+		 * previously found policy zone.
+		 * Stop looking if the next best choice cannot
+		 * replace what we already have.
 		 */
+		rpz = rpzs->zones[rpz_num];
 		if (st->m.policy != DNS_RPZ_POLICY_MISS) {
 			if (st->m.rpz->num < rpz->num)
 				break;
 			if (st->m.rpz->num == rpz->num &&
-			    st->m.type < rpz_type)
-				continue;
+			    (st->m.type < rpz_type ||
+			     st->m.prefix > prefix))
+				break;
 		}
+
 		/*
-		 * Construct the policy's owner name.
+		 * Get the policy for a prefix at least as long
+		 * as the prefix of the entry we had before.
 		 */
-		dns_fixedname_init(&prefixf);
-		prefix = dns_fixedname_name(&prefixf);
-		dns_name_split(qname, 1, prefix, NULL);
-		if (rpz_type == DNS_RPZ_TYPE_NSDNAME)
-			suffix = &rpz->nsdname;
-		else
-			suffix = &rpz->origin;
-		dns_fixedname_init(&rpz_qnamef);
-		rpz_qname = dns_fixedname_name(&rpz_qnamef);
-		for (;;) {
-			result = dns_name_concatenate(prefix, suffix,
-						      rpz_qname, NULL);
-			if (result == ISC_R_SUCCESS)
-				break;
-			INSIST(result == DNS_R_NAMETOOLONG);
+		dns_fixedname_init(&p_namef);
+		p_name = dns_fixedname_name(&p_namef);
+		result = rpz_get_p_name(client, p_name, rpz, rpz_type, ip_name);
+		if (result != ISC_R_SUCCESS)
+			continue;
+		result = rpz_find_p(client, ip_name, qtype,
+				    p_name, rpz, rpz_type,
+				    &p_zone, &p_db, &p_version, &p_node,
+				    p_rdatasetp, &policy);
+		switch (result) {
+		case DNS_R_NXDOMAIN:
 			/*
-			 * Trim the name until it is not too long.
+			 * Continue after a policy record that is missing
+			 * contrary to the summary data.  The summary
+			 * data can out of date during races with and among
+			 * policy zone updates.
 			 */
-			labels = dns_name_countlabels(prefix);
-			if (labels < 2) {
-				rpz_log_fail(client, DNS_RPZ_ERROR_LEVEL,
-					     rpz_type, suffix,
-					     "concatentate() ", result);
-				return (ISC_R_SUCCESS);
-			}
-			if (labels+1 == dns_name_countlabels(qname)) {
-				rpz_log_fail(client, DNS_RPZ_DEBUG_LEVEL1,
-					     rpz_type, suffix,
-					     "concatentate() ", result);
+			continue;
+		case DNS_R_SERVFAIL:
+			rpz_clean(&p_zone, &p_db, &p_node, p_rdatasetp);
+			st->m.policy = DNS_RPZ_POLICY_ERROR;
+			return (DNS_R_SERVFAIL);
+		default:
+			/*
+			 * Forget this policy if it is not preferable
+			 * to the previously found policy.
+			 * If this policy is not good, then stop looking
+			 * because none of the later policy zones would work.
+			 *
+			 * With more than one applicable policy, prefer
+			 * the earliest configured policy,
+			 * client-IP over QNAME over IP over NSDNAME over NSIP,
+			 * the longest prefix
+			 * the lexically smallest address.
+			 * dns_rpz_find_ip() ensures st->m.rpz->num >= rpz->num.
+			 * We can compare new and current p_name because
+			 * both are of the same type and in the same zone.
+			 * The tests above eliminate other reasons to
+			 * reject this policy.  If this policy can't work,
+			 * then neither can later zones.
+			 */
+			if (st->m.policy != DNS_RPZ_POLICY_MISS &&
+			    rpz->num == st->m.rpz->num &&
+			     (st->m.type == rpz_type &&
+			      st->m.prefix == prefix &&
+			      0 > dns_name_rdatacompare(st->p_name, p_name)))
+				break;
+
+			/*
+			 * Stop checking after saving an enabled hit in this
+			 * policy zone.  The radix tree in the policy zone
+			 * ensures that we found the longest match.
+			 */
+			if (rpz->policy != DNS_RPZ_POLICY_DISABLED) {
+				rpz_save_p(st, rpz, rpz_type,
+					   policy, p_name, prefix, result,
+					   &p_zone, &p_db, &p_node,
+					   p_rdatasetp, p_version);
+				break;
 			}
-			dns_name_split(prefix, labels - 1, NULL, prefix);
+
+			/*
+			 * Log DNS_RPZ_POLICY_DISABLED zones
+			 * and try the next eligible policy zone.
+			 */
+			rpz_log_rewrite(client, ISC_TRUE, policy, rpz_type,
+					p_zone, p_name);
+		}
+	}
+
+	rpz_clean(&p_zone, &p_db, &p_node, p_rdatasetp);
+	return (ISC_R_SUCCESS);
+}
+
+/*
+ * Check the IP addresses in the A or AAAA rrsets for name against
+ * all eligible rpz_type (IP or NSIP) response policy rewrite rules.
+ */
+static isc_result_t
+rpz_rewrite_ip_rrset(ns_client_t *client,
+		     dns_name_t *name, dns_rdatatype_t qtype,
+		     dns_rpz_type_t rpz_type, dns_rdatatype_t ip_type,
+		     dns_db_t **ip_dbp, dns_dbversion_t *ip_version,
+		     dns_rdataset_t **ip_rdatasetp,
+		     dns_rdataset_t **p_rdatasetp, isc_boolean_t resuming)
+{
+	dns_rpz_zbits_t zbits;
+	isc_netaddr_t netaddr;
+	struct in_addr ina;
+	struct in6_addr in6a;
+	isc_result_t result;
+
+	zbits = rpz_get_zbits(client, ip_type, rpz_type);
+	if (zbits == 0)
+		return (ISC_R_SUCCESS);
+
+	/*
+	 * Get the A or AAAA rdataset.
+	 */
+	result = rpz_rrset_find(client, name, ip_type, rpz_type, ip_dbp,
+				ip_version, ip_rdatasetp, resuming);
+	switch (result) {
+	case ISC_R_SUCCESS:
+	case DNS_R_GLUE:
+	case DNS_R_ZONECUT:
+		break;
+	case DNS_R_EMPTYNAME:
+	case DNS_R_EMPTYWILD:
+	case DNS_R_NXDOMAIN:
+	case DNS_R_NCACHENXDOMAIN:
+	case DNS_R_NXRRSET:
+	case DNS_R_NCACHENXRRSET:
+	case ISC_R_NOTFOUND:
+		return (ISC_R_SUCCESS);
+	case DNS_R_DELEGATION:
+	case DNS_R_DUPLICATE:
+	case DNS_R_DROP:
+		return (result);
+	case DNS_R_CNAME:
+	case DNS_R_DNAME:
+		rpz_log_fail(client, DNS_RPZ_DEBUG_LEVEL1, name, rpz_type,
+			     "NS address rewrite rrset ", result);
+		return (ISC_R_SUCCESS);
+		break;
+	default:
+		if (client->query.rpz_st->m.policy != DNS_RPZ_POLICY_ERROR) {
+			client->query.rpz_st->m.policy = DNS_RPZ_POLICY_ERROR;
+			rpz_log_fail(client, DNS_RPZ_ERROR_LEVEL, name,
+				     rpz_type, "NS address rewrite rrset ",
+				     result);
+		}
+		return (DNS_R_SERVFAIL);
+	}
+
+	/*
+	 * Check all of the IP addresses in the rdataset.
+	 */
+	for (result = dns_rdataset_first(*ip_rdatasetp);
+	     result == ISC_R_SUCCESS;
+	     result = dns_rdataset_next(*ip_rdatasetp)) {
+
+		dns_rdata_t rdata = DNS_RDATA_INIT;
+		dns_rdataset_current(*ip_rdatasetp, &rdata);
+		switch (rdata.type) {
+		case dns_rdatatype_a:
+			INSIST(rdata.length == 4);
+			memcpy(&ina.s_addr, rdata.data, 4);
+			isc_netaddr_fromin(&netaddr, &ina);
+			break;
+		case dns_rdatatype_aaaa:
+			INSIST(rdata.length == 16);
+			memcpy(in6a.s6_addr, rdata.data, 16);
+			isc_netaddr_fromin6(&netaddr, &in6a);
+			break;
+		default:
+			continue;
+		}
+
+		result = rpz_rewrite_ip(client, &netaddr, qtype, rpz_type,
+					zbits, p_rdatasetp);
+		if (result != ISC_R_SUCCESS)
+			return (result);
+	}
+
+	return (ISC_R_SUCCESS);
+}
+
+/*
+ * Look for IP addresses in A and AAAA rdatasets
+ * that trigger all eligible IP or NSIP policy rules.
+ */
+static isc_result_t
+rpz_rewrite_ip_rrsets(ns_client_t *client, dns_name_t *name,
+		      dns_rdatatype_t qtype, dns_rpz_type_t rpz_type,
+		      dns_rdataset_t **ip_rdatasetp, isc_boolean_t resuming)
+{
+	dns_rpz_st_t *st;
+	dns_dbversion_t *ip_version;
+	dns_db_t *ip_db;
+	dns_rdataset_t *p_rdataset;
+	isc_result_t result;
+
+	st = client->query.rpz_st;
+	ip_version = NULL;
+	ip_db = NULL;
+	p_rdataset = NULL;
+	if ((st->state & DNS_RPZ_DONE_IPv4) == 0 &&
+	    (qtype == dns_rdatatype_a ||
+	     qtype == dns_rdatatype_any ||
+	     rpz_type == DNS_RPZ_TYPE_NSIP)) {
+		/*
+		 * Rewrite based on an IPv4 address that will appear
+		 * in the ANSWER section or if we are checking IP addresses.
+		 */
+		result = rpz_rewrite_ip_rrset(client, name, qtype,
+					      rpz_type, dns_rdatatype_a,
+					      &ip_db, ip_version, ip_rdatasetp,
+					      &p_rdataset, resuming);
+		if (result == ISC_R_SUCCESS)
+			st->state |= DNS_RPZ_DONE_IPv4;
+	} else {
+		result = ISC_R_SUCCESS;
+	}
+	if (result == ISC_R_SUCCESS &&
+	    (qtype == dns_rdatatype_aaaa ||
+	     qtype == dns_rdatatype_any ||
+	     rpz_type == DNS_RPZ_TYPE_NSIP)) {
+		/*
+		 * Rewrite based on IPv6 addresses that will appear
+		 * in the ANSWER section or if we are checking IP addresses.
+		 */
+		result = rpz_rewrite_ip_rrset(client, name,  qtype,
+					      rpz_type, dns_rdatatype_aaaa,
+					      &ip_db, ip_version, ip_rdatasetp,
+					      &p_rdataset, resuming);
+	}
+	if (ip_db != NULL)
+		dns_db_detach(&ip_db);
+	query_putrdataset(client, &p_rdataset);
+	return (result);
+}
+
+/*
+ * Try to rewrite a request for a qtype rdataset based on the trigger name
+ * trig_name and rpz_type (DNS_RPZ_TYPE_QNAME or DNS_RPZ_TYPE_NSDNAME).
+ * Record the results including the replacement rdataset if any
+ * in client->query.rpz_st.
+ * *rdatasetp is a scratch rdataset.
+ */
+static isc_result_t
+rpz_rewrite_name(ns_client_t *client, dns_name_t *trig_name,
+		 dns_rdatatype_t qtype, dns_rpz_type_t rpz_type,
+		 dns_rpz_zbits_t allowed_zbits, dns_rdataset_t **rdatasetp)
+{
+	dns_rpz_zone_t *rpz;
+	dns_rpz_st_t *st;
+	dns_fixedname_t p_namef;
+	dns_name_t *p_name;
+	dns_rpz_zbits_t zbits;
+	dns_rpz_num_t rpz_num;
+	dns_zone_t *p_zone;
+	dns_db_t *p_db;
+	dns_dbversion_t *p_version;
+	dns_dbnode_t *p_node;
+	dns_rpz_policy_t policy;
+	isc_result_t result;
+
+	zbits = rpz_get_zbits(client, qtype, rpz_type);
+	zbits &= allowed_zbits;
+	if (zbits == 0)
+		return (ISC_R_SUCCESS);
+
+	/*
+	 * If there is only one eligible policy zone, just check it.
+	 * If more than one, then use the summary database to find
+	 * the bit mask of policy zones with policies for this trigger name.
+	 *	x&-x is the least significant bit set in x
+	 */
+	if (zbits != (zbits & -zbits)) {
+		zbits = dns_rpz_find_name(client->view->rpzs,
+					  rpz_type, zbits, trig_name);
+		if (zbits == 0)
+			return (ISC_R_SUCCESS);
+	}
+
+	dns_fixedname_init(&p_namef);
+	p_name = dns_fixedname_name(&p_namef);
+
+	p_zone = NULL;
+	p_db = NULL;
+	p_node = NULL;
+
+	st = client->query.rpz_st;
+
+	/*
+	 * Check the trigger name in every policy zone that the summary data
+	 * says has a hit for the trigger name.
+	 * Most of the time there are no eligible zones and the summary data
+	 * keeps us from getting this far.
+	 * We check the most eligible zone first and so usually check only
+	 * one policy zone.
+	 */
+	for (rpz_num = 0;
+	     zbits != 0;
+	     ++rpz_num, zbits >>= 1) {
+		if ((zbits & 1) == 0) {
+			INSIST(rpz_num <= client->view->rpzs->p.num_zones);
+			continue;
 		}
 
 		/*
-		 * See if the policy record exists and get its policy.
+		 * Do not check policy zones that cannot replace a previously
+		 * found policy.
 		 */
-		result = rpz_find(client, qtype, rpz_qname, qname, rpz,
-				  rpz_type, &zone, &db, &version, &node,
-				  rdatasetp, &policy);
+		rpz = client->view->rpzs->zones[rpz_num];
+		if (st->m.policy != DNS_RPZ_POLICY_MISS) {
+			if (st->m.rpz->num < rpz->num)
+				break;
+			if (st->m.rpz->num == rpz->num &&
+			    st->m.type < rpz_type)
+				break;
+		}
+
+		/*
+		 * Get the next policy zone's record for this trigger name.
+		 */
+		result = rpz_get_p_name(client, p_name, rpz, rpz_type,
+					trig_name);
+		if (result != ISC_R_SUCCESS)
+			continue;
+		result = rpz_find_p(client, trig_name, qtype, p_name,
+				    rpz, rpz_type,
+				    &p_zone, &p_db, &p_version, &p_node,
+				    rdatasetp, &policy);
 		switch (result) {
 		case DNS_R_NXDOMAIN:
-			break;
+			/*
+			 * Continue after a missing policy record
+			 * contrary to the summary data.  The summary
+			 * data can out of date during races with and among
+			 * policy zone updates.
+			 */
+			continue;
 		case DNS_R_SERVFAIL:
-			rpz_clean(&zone, &db, &node, rdatasetp);
+			rpz_clean(&p_zone, &p_db, &p_node, rdatasetp);
 			st->m.policy = DNS_RPZ_POLICY_ERROR;
 			return (DNS_R_SERVFAIL);
 		default:
 			/*
-			 * We are dealing with names here.
 			 * With more than one applicable policy, prefer
 			 * the earliest configured policy,
-			 * QNAME over IP over NSDNAME over NSIP,
+			 * client-IP over QNAME over IP over NSDNAME over NSIP,
 			 * and the smallest name.
-			 * Because of the testing above,
-			 * we known st->m.rpz->num >= rpz->num  and either
+			 * We known st->m.rpz->num >= rpz->num  and either
 			 * st->m.rpz->num > rpz->num or st->m.type >= rpz_type
 			 */
 			if (st->m.policy != DNS_RPZ_POLICY_MISS &&
 			    rpz->num == st->m.rpz->num &&
 			    (st->m.type < rpz_type ||
 			     (st->m.type == rpz_type &&
-			      0 >= dns_name_compare(rpz_qname, st->qname))))
+			      0 >= dns_name_compare(p_name, st->p_name))))
 				continue;
 #if 0
 			/*
@@ -4505,11 +4801,12 @@
 			 * names in TLDs that start with "rpz-" should
 			 * ICANN ever allow such TLDs.
 			 */
-			labels = dns_name_countlabels(qname);
+			unsigned int labels;
+			labels = dns_name_countlabels(trig_name);
 			if (labels >= 2) {
 				dns_label_t label;
 
-				dns_name_getlabel(qname, labels-2, &label);
+				dns_name_getlabel(trig_name, labels-2, &label);
 				if (label.length >= sizeof(DNS_RPZ_PREFIX)-1 &&
 				    strncasecmp((const char *)label.base+1,
 						DNS_RPZ_PREFIX,
@@ -4517,46 +4814,29 @@
 					continue;
 			}
 #endif
+			if (rpz->policy != DNS_RPZ_POLICY_DISABLED) {
+				rpz_save_p(st, rpz, rpz_type,
+					   policy, p_name, 0, result,
+					   &p_zone, &p_db, &p_node,
+					   rdatasetp, p_version);
+				/*
+				 * After a hit, higher numbered policy zones
+				 * are irrelevant
+				 */
+				rpz_clean(&p_zone, &p_db, &p_node, rdatasetp);
+				return (ISC_R_SUCCESS);
+			}
 			/*
-			 * Merely log DNS_RPZ_POLICY_DISABLED hits.
+			 * Log DNS_RPZ_POLICY_DISABLED zones
+			 * and try the next eligible policy zone.
 			 */
-			if (rpz->policy == DNS_RPZ_POLICY_DISABLED) {
-				rpz_log_rewrite(client, ISC_TRUE, policy,
-						rpz_type, zone, rpz_qname);
-				continue;
-			}
-
-			rpz_match_clear(st);
-			st->m.rpz = rpz;
-			st->m.type = rpz_type;
-			st->m.prefix = 0;
-			st->m.policy = policy;
-			st->m.result = result;
-			dns_name_copy(rpz_qname, st->qname, NULL);
-			if (*rdatasetp != NULL &&
-			    dns_rdataset_isassociated(*rdatasetp)) {
-				dns_rdataset_t *trdataset;
-
-				trdataset = st->m.rdataset;
-				st->m.rdataset = *rdatasetp;
-				*rdatasetp = trdataset;
-				st->m.ttl = ISC_MIN(st->m.rdataset->ttl,
-						    rpz->max_policy_ttl);
-			} else {
-				st->m.ttl = ISC_MIN(DNS_RPZ_TTL_DEFAULT,
-						    rpz->max_policy_ttl);
-			}
-			st->m.node = node;
-			node = NULL;
-			st->m.db = db;
-			db = NULL;
-			st->m.version = version;
-			st->m.zone = zone;
-			zone = NULL;
+			rpz_log_rewrite(client, ISC_TRUE, policy, rpz_type,
+					p_zone, p_name);
+			break;
 		}
 	}
 
-	rpz_clean(&zone, &db, &node, rdatasetp);
+	rpz_clean(&p_zone, &p_db, &p_node, rdatasetp);
 	return (ISC_R_SUCCESS);
 }
 
@@ -4569,7 +4849,7 @@
 	st = client->query.rpz_st;
 
 	if (str != NULL)
-		rpz_log_fail(client, level, DNS_RPZ_TYPE_NSIP, nsname,
+		rpz_log_fail(client, level, nsname, DNS_RPZ_TYPE_NSIP,
 			     str, result);
 	if (st->r.ns_rdataset != NULL &&
 	    dns_rdataset_isassociated(st->r.ns_rdataset))
@@ -4589,7 +4869,9 @@
 	dns_rdataset_t *rdataset;
 	dns_fixedname_t nsnamef;
 	dns_name_t *nsname;
-	isc_boolean_t ck_ip;
+	int qresult_type;
+	dns_rpz_zbits_t zbits;
+	isc_netaddr_t netaddr;
 	isc_result_t result;
 
 	st = client->query.rpz_st;
@@ -4603,10 +4885,10 @@
 		st->m.policy = DNS_RPZ_POLICY_MISS;
 		memset(&st->r, 0, sizeof(st->r));
 		memset(&st->q, 0, sizeof(st->q));
-		dns_fixedname_init(&st->_qnamef);
+		dns_fixedname_init(&st->_p_namef);
 		dns_fixedname_init(&st->_r_namef);
 		dns_fixedname_init(&st->_fnamef);
-		st->qname = dns_fixedname_name(&st->_qnamef);
+		st->p_name = dns_fixedname_name(&st->_p_namef);
 		st->r_name = dns_fixedname_name(&st->_r_namef);
 		st->fname = dns_fixedname_name(&st->_fnamef);
 		client->query.rpz_st = st;
@@ -4619,7 +4901,7 @@
 	case ISC_R_SUCCESS:
 	case DNS_R_GLUE:
 	case DNS_R_ZONECUT:
-		ck_ip = ISC_TRUE;
+		qresult_type = 0;
 		break;
 	case DNS_R_EMPTYNAME:
 	case DNS_R_NXRRSET:
@@ -4629,73 +4911,136 @@
 	case DNS_R_NCACHENXRRSET:
 	case DNS_R_CNAME:
 	case DNS_R_DNAME:
-		ck_ip = ISC_FALSE;
+		qresult_type = 1;
 		break;
 	case DNS_R_DELEGATION:
 	case ISC_R_NOTFOUND:
-		return (ISC_R_SUCCESS);
+		qresult_type = 2;
+		break;
 	case ISC_R_FAILURE:
 	case ISC_R_TIMEDOUT:
 	case DNS_R_BROKENCHAIN:
-		rpz_log_fail(client, DNS_RPZ_DEBUG_LEVEL3, DNS_RPZ_TYPE_QNAME,
-			     client->query.qname,
-			     "stop on qresult in rpz_rewrite() ",
-			     qresult);
+		rpz_log_fail(client, DNS_RPZ_DEBUG_LEVEL3, client->query.qname,
+			     DNS_RPZ_TYPE_QNAME,
+			     "stop on qresult in rpz_rewrite() ", qresult);
 		return (ISC_R_SUCCESS);
 	default:
-		rpz_log_fail(client, DNS_RPZ_DEBUG_LEVEL1, DNS_RPZ_TYPE_QNAME,
-			     client->query.qname,
+		rpz_log_fail(client, DNS_RPZ_DEBUG_LEVEL1, client->query.qname,
+			     DNS_RPZ_TYPE_QNAME,
 			     "stop on unrecognized qresult in rpz_rewrite() ",
 			     qresult);
 		return (ISC_R_SUCCESS);
 	}
 
 	rdataset = NULL;
+
+	/*
+	 * Check triggers for the client IP address once.
+	 */
+	if ((st->state & DNS_RPZ_DONE_CLIENT_IP) == 0) {
+		st->state |= DNS_RPZ_DONE_CLIENT_IP;
+		zbits = rpz_get_zbits(client, dns_rdatatype_none,
+				      DNS_RPZ_TYPE_CLIENT_IP);
+		if (zbits != 0) {
+			isc_netaddr_fromsockaddr(&netaddr, &client->peeraddr);
+			result = rpz_rewrite_ip(client, &netaddr, qtype,
+						DNS_RPZ_TYPE_CLIENT_IP,
+						zbits, &rdataset);
+			if (result != ISC_R_SUCCESS)
+				goto cleanup;
+		}
+	}
+
+	/*
+	 * Check triggers for the query name if this is the first time
+	 * for the current qname.
+	 * There is a first time for each name in a CNAME chain.
+	 */
 	if ((st->state & DNS_RPZ_DONE_QNAME) == 0) {
+		if (qresult_type == 2) {
+			/*
+			 * This request needs recursion that has not been done.
+			 * Get bits for the policy zones that do not
+			 * require recursion be done before applying their
+			 * policies.  By not recursing after applying their
+			 * policies, those policy zones leak information
+			 * to operators of the targeted zones.
+			 * Bail out to wait for recursion if there are no
+			 * such policies.
+			 */
+			zbits = client->view->rpzs->have.qname_skip_recurse;
+			if (zbits == 0) {
+				result = ISC_R_SUCCESS;
+				goto cleanup;
+			}
+		} else {
+			zbits = DNS_RPZ_ALL_ZBITS;
+		}
+		result = rpz_rewrite_name(client, client->query.qname, qtype,
+					  DNS_RPZ_TYPE_QNAME, zbits, &rdataset);
+		if (result != ISC_R_SUCCESS)
+			goto cleanup;
+
 		/*
-		 * Check rules for the query name if this is the first time
-		 * for the current qname, i.e. we've not been recursing.
-		 * There is a first time for each name in a CNAME chain.
+		 * This may have been an attempt to find a qname trigger
+		 * before required recursion (qresult_type == 2).
+		 * If so and no pre-recursion triggers hit, then quit and
+		 * do everything again after recursing. Do not bother saving
+		 * the work already done, because recursion is so slow.
+		 * If a pre-recursion trigger hit, then no other triggers
+		 * can be relevant and so quit.
 		 */
-		result = rpz_rewrite_name(client, qtype, client->query.qname,
-					  DNS_RPZ_TYPE_QNAME, &rdataset);
-		if (result != ISC_R_SUCCESS)
+		if (qresult_type == 2)
 			goto cleanup;
 
 		st->r.label = dns_name_countlabels(client->query.qname);
 
+		/*
+		 * Check IP addresses for the qname next,
+		 * starting with IPv4 addresses.
+		 */
 		st->state &= ~(DNS_RPZ_DONE_QNAME_IP | DNS_RPZ_DONE_IPv4);
 		st->state |= DNS_RPZ_DONE_QNAME;
 	}
 
 	/*
-	 * Check known IP addresses for the query name.
+	 * Check known IP addresses for the query name if the database
+	 * lookup resulted in some addresses (qresult_type == 0)
+	 * and if we have not already checked them.
 	 * Any recursion required for the query has already happened.
 	 * Do not check addresses that will not be in the ANSWER section.
 	 */
-	if ((st->state & DNS_RPZ_DONE_QNAME_IP) == 0 &&
-	    (st->state & DNS_RPZ_HAVE_IP) != 0 && ck_ip) {
-		result = rpz_rewrite_rrsets(client, DNS_RPZ_TYPE_IP,
-					    client->query.qname, qtype,
-					    &rdataset, resuming);
+	if ((st->state & DNS_RPZ_DONE_QNAME_IP) == 0 && qresult_type == 0 &&
+	    rpz_get_zbits(client, qtype, DNS_RPZ_TYPE_IP) != 0) {
+		result = rpz_rewrite_ip_rrsets(client,
+					       client->query.qname, qtype,
+					       DNS_RPZ_TYPE_IP,
+					       &rdataset, resuming);
 		if (result != ISC_R_SUCCESS)
 			goto cleanup;
-		st->state &= ~DNS_RPZ_DONE_IPv4;
+		/*
+		 * We are finished checking the IP addresses for the qname.
+		 * Start with IPv4 if we will check NS IP addesses.
+		 */
 		st->state |= DNS_RPZ_DONE_QNAME_IP;
+		st->state &= ~DNS_RPZ_DONE_IPv4;
 	}
 
 	/*
-	 * Stop looking for rules if there are none of the other kinds.
+	 * Stop looking for rules if there are none of the other kinds
+	 * that could override what we already have.
 	 */
-	if ((st->state & (DNS_RPZ_HAVE_NSIPv4 | DNS_RPZ_HAVE_NSIPv6 |
-			  DNS_RPZ_HAVE_NSDNAME)) == 0) {
+	if (rpz_get_zbits(client, dns_rdatatype_any,
+			  DNS_RPZ_TYPE_NSDNAME) == 0 &&
+	    rpz_get_zbits(client, dns_rdatatype_any,
+			  DNS_RPZ_TYPE_NSIP) == 0) {
 		result = ISC_R_SUCCESS;
 		goto cleanup;
 	}
 
 	dns_fixedname_init(&nsnamef);
 	dns_name_clone(client->query.qname, dns_fixedname_name(&nsnamef));
-	while (st->r.label > client->view->rpz_min_ns_labels) {
+	while (st->r.label > client->view->rpzs->p.min_ns_labels) {
 		/*
 		 * Get NS rrset for each domain in the current qname.
 		 */
@@ -4709,8 +5054,8 @@
 		if (st->r.ns_rdataset == NULL ||
 		    !dns_rdataset_isassociated(st->r.ns_rdataset)) {
 			dns_db_t *db = NULL;
-			result = rpz_rrset_find(client, DNS_RPZ_TYPE_NSDNAME,
-						nsname, dns_rdatatype_ns,
+			result = rpz_rrset_find(client, nsname, dns_rdatatype_ns,
+						DNS_RPZ_TYPE_NSDNAME,
 						&db, NULL, &st->r.ns_rdataset,
 						resuming);
 			if (db != NULL)
@@ -4765,7 +5110,7 @@
 			dns_rdata_reset(&nsrdata);
 			if (result != ISC_R_SUCCESS) {
 				rpz_log_fail(client, DNS_RPZ_ERROR_LEVEL,
-					     DNS_RPZ_TYPE_NSIP, nsname,
+					     nsname, DNS_RPZ_TYPE_NSIP,
 					     "rdata_tostruct() ", result);
 				st->m.policy = DNS_RPZ_POLICY_ERROR;
 				goto cleanup;
@@ -4782,11 +5127,11 @@
 			 * Check this NS name if we did not handle it
 			 * during a previous recursion.
 			 */
-			if ((st->state & DNS_RPZ_DONE_NSDNAME) == 0 &&
-			    (st->state & DNS_RPZ_HAVE_NSDNAME) != 0) {
-				result = rpz_rewrite_name(client, qtype,
-							&ns.name,
+			if ((st->state & DNS_RPZ_DONE_NSDNAME) == 0) {
+				result = rpz_rewrite_name(client, &ns.name,
+							qtype,
 							DNS_RPZ_TYPE_NSDNAME,
+							DNS_RPZ_ALL_ZBITS,
 							&rdataset);
 				if (result != ISC_R_SUCCESS) {
 					dns_rdata_freestruct(&ns);
@@ -4797,9 +5142,9 @@
 			/*
 			 * Check all IP addresses for this NS name.
 			 */
-			result = rpz_rewrite_rrsets(client, DNS_RPZ_TYPE_NSIP,
-						    &ns.name, dns_rdatatype_any,
-						    &rdataset, resuming);
+			result = rpz_rewrite_ip_rrsets(client, &ns.name, qtype,
+						       DNS_RPZ_TYPE_NSIP,
+						       &rdataset, resuming);
 			dns_rdata_freestruct(&ns);
 			if (result != ISC_R_SUCCESS)
 				goto cleanup;
@@ -4809,10 +5154,16 @@
 		} while (result == ISC_R_SUCCESS);
 		dns_rdataset_disassociate(st->r.ns_rdataset);
 		st->r.label--;
+
+		if (rpz_get_zbits(client, dns_rdatatype_any,
+				  DNS_RPZ_TYPE_NSDNAME) == 0 &&
+		    rpz_get_zbits(client, dns_rdatatype_any,
+				  DNS_RPZ_TYPE_NSIP) == 0)
+			break;
 	}
 
 	/*
-	 * Use the best, if any, hit.
+	 * Use the best hit, if any.
 	 */
 	result = ISC_R_SUCCESS;
 
@@ -4827,7 +5178,7 @@
 		if (st->m.policy == DNS_RPZ_POLICY_PASSTHRU &&
 		    result != DNS_R_DELEGATION)
 			rpz_log_rewrite(client, ISC_FALSE, st->m.policy,
-					st->m.type, st->m.zone, st->qname);
+					st->m.type, st->m.zone, st->p_name);
 		rpz_match_clear(st);
 	}
 	if (st->m.policy == DNS_RPZ_POLICY_ERROR) {
@@ -4846,19 +5197,25 @@
  * by the client in DNSSEC or a lack of signatures.
  */
 static isc_boolean_t
-rpz_ck_dnssec(ns_client_t *client, isc_result_t result,
+rpz_ck_dnssec(ns_client_t *client, isc_result_t qresult,
 	      dns_rdataset_t *rdataset, dns_rdataset_t *sigrdataset)
 {
 	dns_fixedname_t fixed;
 	dns_name_t *found;
 	dns_rdataset_t trdataset;
 	dns_rdatatype_t type;
+	isc_result_t result;
 
-	if (client->view->rpz_break_dnssec)
+	if (client->view->rpzs->p.break_dnssec || !WANTDNSSEC(client))
 		return (ISC_TRUE);
+
 	/*
-	 * sigrdataset == NULL if and only !WANTDNSSEC(client)
+	 * We do not know if there are signatures if we have not recursed
+	 * for them.
 	 */
+	if (qresult == DNS_R_DELEGATION || qresult == ISC_R_NOTFOUND)
+		return (ISC_FALSE);
+
 	if (sigrdataset == NULL)
 		return (ISC_TRUE);
 	if (dns_rdataset_isassociated(sigrdataset))
@@ -4938,7 +5295,7 @@
 	if (result != ISC_R_SUCCESS)
 		return (result);
 	rpz_log_rewrite(client, ISC_FALSE, st->m.policy,
-			st->m.type, st->m.zone, st->qname);
+			st->m.type, st->m.zone, st->p_name);
 	ns_client_qnamereplace(client, fname);
 	/*
 	 * Turn off DNSSEC because the results of a
@@ -5865,8 +6222,130 @@
  resume:
 	CTRACE("query_find: resume");
 
-	if (!ISC_LIST_EMPTY(client->view->rpz_zones) &&
-	    (RECURSIONOK(client) || !client->view->rpz_recursive_only) &&
+	/*
+	 * Rate limit these responses to this client.
+	 * Do not delay counting and handling obvious referrals,
+	 *	since those won't come here again.
+	 * Delay handling delegations for which we are certain to recurse and
+	 *	return here (DNS_R_DELEGATION, not a child of one of our
+	 *	own zones, and recursion enabled)
+	 * Count each response at most once.
+	 */
+	if (client->view->rrl != NULL &&
+	    ((fname != NULL && dns_name_isabsolute(fname)) ||
+	     (result == ISC_R_NOTFOUND && !RECURSIONOK(client))) &&
+	    !(result == DNS_R_DELEGATION && !is_zone && RECURSIONOK(client)) &&
+	    (client->query.attributes & NS_QUERYATTR_RRL_CHECKED) == 0) {
+		dns_rdataset_t nc_rdataset;
+		isc_boolean_t wouldlog;
+		char log_buf[DNS_RRL_LOG_BUF_LEN];
+		isc_result_t nc_result, resp_result;
+		dns_rrl_result_t rrl_result;
+
+		client->query.attributes |= NS_QUERYATTR_RRL_CHECKED;
+
+		wouldlog = isc_log_wouldlog(ns_g_lctx, DNS_RRL_LOG_DROP);
+		tname = fname;
+		if (result == DNS_R_NXDOMAIN) {
+			/*
+			 * Use the database origin name to rate limit NXDOMAIN
+			 */
+			if (db != NULL)
+				tname = dns_db_origin(db);
+			resp_result = result;
+		} else if (result == DNS_R_NCACHENXDOMAIN &&
+			   rdataset != NULL &&
+			   dns_rdataset_isassociated(rdataset) &&
+			   (rdataset->attributes &
+			    DNS_RDATASETATTR_NEGATIVE) != 0) {
+			/*
+			 * Try to use owner name in the negative cache SOA.
+			 */
+			dns_fixedname_init(&fixed);
+			dns_rdataset_init(&nc_rdataset);
+			for (nc_result = dns_rdataset_first(rdataset);
+			     nc_result == ISC_R_SUCCESS;
+			     nc_result = dns_rdataset_next(rdataset)) {
+				dns_ncache_current(rdataset,
+						   dns_fixedname_name(&fixed),
+						   &nc_rdataset);
+				if (nc_rdataset.type == dns_rdatatype_soa) {
+					dns_rdataset_disassociate(&nc_rdataset);
+					tname = dns_fixedname_name(&fixed);
+					break;
+				}
+				dns_rdataset_disassociate(&nc_rdataset);
+			}
+			resp_result = DNS_R_NXDOMAIN;
+		} else if (result == DNS_R_NXRRSET ||
+			   result == DNS_R_EMPTYNAME) {
+			resp_result = DNS_R_NXRRSET;
+		} else if (result == DNS_R_DELEGATION) {
+			resp_result = result;
+		} else if (result == ISC_R_NOTFOUND) {
+			/*
+			 * Handle referral to ".", including when recursion
+			 * is off or not requested and the hints have not
+			 * been loaded or we have "additional-from-cache no".
+			 */
+			tname = dns_rootname;
+			resp_result = DNS_R_DELEGATION;
+		} else {
+			resp_result = ISC_R_SUCCESS;
+		}
+		rrl_result = dns_rrl(client->view, &client->peeraddr,
+				     ISC_TF((client->attributes
+					     & NS_CLIENTATTR_TCP) != 0),
+				     client->message->rdclass, qtype, tname,
+				     resp_result, client->now,
+				     wouldlog, log_buf, sizeof(log_buf));
+		if (rrl_result != DNS_RRL_RESULT_OK) {
+			/*
+			 * Log dropped or slipped responses in the query
+			 * category so that requests are not silently lost.
+			 * Starts of rate-limited bursts are logged in
+			 * DNS_LOGCATEGORY_RRL.
+			 *
+			 * Dropped responses are counted with dropped queries
+			 * in QryDropped while slipped responses are counted
+			 * with other truncated responses in RespTruncated.
+			 */
+			if (wouldlog) {
+				ns_client_log(client,
+					      NS_LOGCATEGORY_QUERY_EERRORS,
+					      NS_LOGMODULE_QUERY,
+					      DNS_RRL_LOG_DROP,
+					      "%s", log_buf);
+			}
+			if (!client->view->rrl->log_only) {
+				if (rrl_result == DNS_RRL_RESULT_DROP) {
+					/*
+					 * These will also be counted in
+					 * dns_nsstatscounter_dropped
+					 */
+					inc_stats(client,
+						dns_nsstatscounter_ratedropped);
+					QUERY_ERROR(DNS_R_DROP);
+				} else {
+					/*
+					 * These will also be counted in
+					 * dns_nsstatscounter_truncatedresp
+					 */
+					inc_stats(client,
+						dns_nsstatscounter_rateslipped);
+					client->message->flags |=
+						DNS_MESSAGEFLAG_TC;
+					if (resp_result == DNS_R_NXDOMAIN)
+						client->message->rcode =
+							dns_rcode_nxdomain;
+				}
+				goto cleanup;
+			}
+		}
+	}
+
+	if (client->view->rpzs != NULL && client->view->rpzs->p.num_zones != 0 &&
+	    (RECURSIONOK(client) || client->view->rpzs->p.no_rd_ok != 0) &&
 	    rpz_ck_dnssec(client, result, rdataset, sigrdataset) &&
 	    !RECURSING(client) &&
 	    (client->query.rpz_st == NULL ||
@@ -5910,7 +6389,8 @@
 		if (rpz_st->m.policy != DNS_RPZ_POLICY_MISS &&
 		    rpz_st->m.policy != DNS_RPZ_POLICY_PASSTHRU &&
 		    rpz_st->m.policy != DNS_RPZ_POLICY_ERROR) {
-			if (rpz_st->m.type == DNS_RPZ_TYPE_QNAME) {
+			if (rpz_st->m.type == DNS_RPZ_TYPE_QNAME ||
+			    rpz_st->m.type == DNS_RPZ_TYPE_CLIENT_IP) {
 				result = dns_name_copy(client->query.qname,
 						       fname, NULL);
 				RUNTIME_CHECK(result == ISC_R_SUCCESS);
@@ -5934,6 +6414,9 @@
 			rpz_st->m.zone = NULL;
 
 			switch (rpz_st->m.policy) {
+			case DNS_RPZ_POLICY_DROP:
+				QUERY_ERROR(DNS_R_DROP);
+				break;
 			case DNS_RPZ_POLICY_NXDOMAIN:
 				result = DNS_R_NXDOMAIN;
 				break;
@@ -6002,7 +6485,7 @@
 			rpz_st->q.is_zone = is_zone;
 			is_zone = ISC_TRUE;
 			rpz_log_rewrite(client, ISC_FALSE, rpz_st->m.policy,
-					rpz_st->m.type, zone, rpz_st->qname);
+					rpz_st->m.type, zone, rpz_st->p_name);
 		}
 	}
 
@@ -7318,12 +7801,14 @@
 	}
 
 	if (eresult != ISC_R_SUCCESS &&
-	    (!PARTIALANSWER(client) || WANTRECURSION(client))) {
+	    (!PARTIALANSWER(client) || WANTRECURSION(client)
+	     || eresult == DNS_R_DROP)) {
 		if (eresult == DNS_R_DUPLICATE || eresult == DNS_R_DROP) {
 			/*
 			 * This was a duplicate query that we are
-			 * recursing on.  Don't send a response now.
-			 * The original query will still cause a response.
+			 * recursing on or the result of rate limiting.
+			 * Don't send a response now for a duplicate query,
+			 * because the original will still cause a response.
 			 */
 			query_next(client, eresult);
 		} else {
diff -r -u bin/named/server.c-orig bin/named/server.c
--- bin/named/server.c-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/named/server.c	2004-01-01 00:00:00.000000000 +0000
@@ -373,7 +373,8 @@
 static isc_result_t
 configure_zone(const cfg_obj_t *config, const cfg_obj_t *zconfig,
 	       const cfg_obj_t *vconfig, isc_mem_t *mctx, dns_view_t *view,
-	       cfg_aclconfctx_t *aclconf, isc_boolean_t added);
+	       cfg_aclconfctx_t *aclconf, isc_boolean_t added,
+	       isc_boolean_t old_rpz_ok);
 
 static isc_result_t
 add_keydata_zone(dns_view_t *view, const char *directory, isc_mem_t *mctx);
@@ -1549,17 +1550,24 @@
 }
 
 static isc_result_t
-configure_rpz(dns_view_t *view, const cfg_listelt_t *element,
-	      isc_boolean_t recursive_only_def, dns_ttl_t ttl_def)
+configure_rpz_zone(dns_view_t *view, const cfg_listelt_t *element,
+		   isc_boolean_t recursive_only_def, dns_ttl_t ttl_def,
+		   const dns_rpz_zone_t *old, isc_boolean_t *old_rpz_okp)
 {
 	const cfg_obj_t *rpz_obj, *obj;
 	const char *str;
-	dns_rpz_zone_t *old, *new;
+	dns_rpz_zone_t *new;
 	isc_result_t result;
+	dns_rpz_num_t rpz_num;
+
+	REQUIRE(old != NULL || !*old_rpz_okp);
 
 	rpz_obj = cfg_listelt_value(element);
 
-	new = isc_mem_get(view->mctx, sizeof(*new));
+	if (view->rpzs->p.num_zones >= DNS_RPZ_MAX_ZONES)
+		return (ISC_R_NOMEMORY);
+
+	new = isc_mem_get(view->rpzs->mctx, sizeof(*new));
 	if (new == NULL) {
 		cfg_obj_log(rpz_obj, ns_g_lctx, DNS_RPZ_ERROR_LEVEL,
 			    "no memory for response policy zones");
@@ -1567,20 +1575,28 @@
 	}
 
 	memset(new, 0, sizeof(*new));
+	result = isc_refcount_init(&new->refs, 1);
+	if (result != ISC_R_SUCCESS) {
+		isc_mem_put(view->rpzs->mctx, new, sizeof(*new));
+		return (result);
+	}
 	dns_name_init(&new->origin, NULL);
+	dns_name_init(&new->client_ip, NULL);
+	dns_name_init(&new->ip, NULL);
 	dns_name_init(&new->nsdname, NULL);
+	dns_name_init(&new->nsip, NULL);
 	dns_name_init(&new->passthru, NULL);
+	dns_name_init(&new->drop, NULL);
 	dns_name_init(&new->cname, NULL);
-	ISC_LIST_INITANDAPPEND(view->rpz_zones, new, link);
+	new->num = view->rpzs->p.num_zones++;
+	view->rpzs->zones[new->num] = new;
 
 	obj = cfg_tuple_get(rpz_obj, "recursive-only");
-	if (cfg_obj_isvoid(obj)) {
-		new->recursive_only = recursive_only_def;
+	if (cfg_obj_isvoid(obj) ? recursive_only_def : cfg_obj_asboolean(obj)) {
+		view->rpzs->p.no_rd_ok &= ~DNS_RPZ_ZBIT(new->num);
 	} else {
-		new->recursive_only = cfg_obj_asboolean(obj);
+		view->rpzs->p.no_rd_ok |= DNS_RPZ_ZBIT(new->num);
 	}
-	if (!new->recursive_only)
-		view->rpz_recursive_only = ISC_FALSE;
 
 	obj = cfg_tuple_get(rpz_obj, "max-policy-ttl");
 	if (cfg_obj_isuint32(obj)) {
@@ -1588,6 +1604,8 @@
 	} else {
 		new->max_policy_ttl = ttl_def;
 	}
+	if (*old_rpz_okp && new->max_policy_ttl != old->max_policy_ttl)
+		*old_rpz_okp = ISC_FALSE;
 
 	str = cfg_obj_asstring(cfg_tuple_get(rpz_obj, "zone name"));
 	result = configure_rpz_name(view, rpz_obj, &new->origin, str, "zone");
@@ -1598,25 +1616,45 @@
 			    "invalid zone name '%s'", str);
 		return (DNS_R_EMPTYLABEL);
 	}
-	for (old = ISC_LIST_HEAD(view->rpz_zones);
-	     old != new;
-	     old = ISC_LIST_NEXT(old, link)) {
-		++new->num;
-		if (dns_name_equal(&old->origin, &new->origin)) {
+	for (rpz_num = 0; rpz_num < view->rpzs->p.num_zones-1; ++rpz_num) {
+		if (dns_name_equal(&view->rpzs->zones[rpz_num]->origin,
+				   &new->origin)) {
 			cfg_obj_log(rpz_obj, ns_g_lctx, DNS_RPZ_ERROR_LEVEL,
 				    "duplicate '%s'", str);
 			result = DNS_R_DUPLICATE;
 			return (result);
 		}
 	}
+	if (*old_rpz_okp && !dns_name_equal(&old->origin, &new->origin))
+		*old_rpz_okp = ISC_FALSE;
+
+	result = configure_rpz_name2(view, rpz_obj, &new->client_ip,
+				     DNS_RPZ_CLIENT_IP_ZONE, &new->origin);
+	if (result != ISC_R_SUCCESS)
+		return (result);
+
+	result = configure_rpz_name2(view, rpz_obj, &new->ip,
+				     DNS_RPZ_IP_ZONE, &new->origin);
+	if (result != ISC_R_SUCCESS)
+		return (result);
 
 	result = configure_rpz_name2(view, rpz_obj, &new->nsdname,
 				     DNS_RPZ_NSDNAME_ZONE, &new->origin);
 	if (result != ISC_R_SUCCESS)
 		return (result);
 
+	result = configure_rpz_name2(view, rpz_obj, &new->nsip,
+				     DNS_RPZ_NSIP_ZONE, &new->origin);
+	if (result != ISC_R_SUCCESS)
+		return (result);
+
 	result = configure_rpz_name(view, rpz_obj, &new->passthru,
-				    DNS_RPZ_PASSTHRU_ZONE, "zone");
+				    DNS_RPZ_PASSTHRU_NAME, "name");
+	if (result != ISC_R_SUCCESS)
+		return (result);
+
+	result = configure_rpz_name(view, rpz_obj, &new->drop,
+				    DNS_RPZ_DROP_NAME, "name");
 	if (result != ISC_R_SUCCESS)
 		return (result);
 
@@ -1635,10 +1673,282 @@
 				return (result);
 		}
 	}
+	if (*old_rpz_okp && (new->policy != old->policy ||
+			     !dns_name_equal(&old->cname, &new->cname)))
+		*old_rpz_okp = ISC_FALSE;
 
 	return (ISC_R_SUCCESS);
 }
 
+static isc_result_t
+configure_rpz(dns_view_t *view, const cfg_obj_t *rpz_obj,
+	      isc_boolean_t *old_rpz_okp)
+{
+	const cfg_listelt_t *zone_element;
+	const cfg_obj_t *sub_obj;
+	isc_boolean_t recursive_only_def;
+	dns_ttl_t ttl_def;
+	dns_rpz_zones_t *new;
+	const dns_rpz_zones_t *old;
+	dns_view_t *pview;
+	const dns_rpz_zone_t *old_zone;
+	isc_result_t result;
+	int i;
+
+	*old_rpz_okp = ISC_FALSE;
+
+	zone_element = cfg_list_first(cfg_tuple_get(rpz_obj, "zone list"));
+	if (zone_element == NULL)
+		return (ISC_R_SUCCESS);
+
+	result = dns_rpz_new_zones(&view->rpzs, view->mctx);
+	if (result != ISC_R_SUCCESS)
+		return (result);
+	new = view->rpzs;
+
+	sub_obj = cfg_tuple_get(rpz_obj, "recursive-only");
+	if (!cfg_obj_isvoid(sub_obj) &&
+	    !cfg_obj_asboolean(sub_obj))
+		recursive_only_def = ISC_FALSE;
+	else
+		recursive_only_def = ISC_TRUE;
+
+	sub_obj = cfg_tuple_get(rpz_obj, "break-dnssec");
+	if (!cfg_obj_isvoid(sub_obj) &&
+	    cfg_obj_asboolean(sub_obj))
+		new->p.break_dnssec = ISC_TRUE;
+	else
+		new->p.break_dnssec = ISC_FALSE;
+
+	sub_obj = cfg_tuple_get(rpz_obj, "max-policy-ttl");
+	if (cfg_obj_isuint32(sub_obj))
+		ttl_def = cfg_obj_asuint32(sub_obj);
+	else
+		ttl_def = DNS_RPZ_MAX_TTL_DEFAULT;
+
+	sub_obj = cfg_tuple_get(rpz_obj, "min-ns-dots");
+	if (cfg_obj_isuint32(sub_obj))
+		new->p.min_ns_labels = cfg_obj_asuint32(sub_obj) + 1;
+	else
+		new->p.min_ns_labels = 2;
+
+	sub_obj = cfg_tuple_get(rpz_obj, "qname-wait-recurse");
+	if (cfg_obj_isvoid(sub_obj) || cfg_obj_asboolean(sub_obj))
+		new->p.qname_wait_recurse = ISC_TRUE;
+	else
+		new->p.qname_wait_recurse = ISC_FALSE;
+
+	pview = NULL;
+	result = dns_viewlist_find(&ns_g_server->viewlist,
+				   view->name, view->rdclass, &pview);
+	if (result == ISC_R_SUCCESS) {
+		old = pview->rpzs;
+	} else {
+		old = NULL;
+	}
+	if (old == NULL)
+		*old_rpz_okp = ISC_FALSE;
+	else
+		*old_rpz_okp = ISC_TRUE;
+
+	for (i = 0;
+	     zone_element != NULL;
+	     ++i, zone_element = cfg_list_next(zone_element)) {
+		if (*old_rpz_okp && i < old->p.num_zones) {
+			old_zone = old->zones[i];
+		} else {
+			*old_rpz_okp = ISC_FALSE;
+			old_zone = NULL;
+		}
+		result = configure_rpz_zone(view, zone_element,
+					    recursive_only_def, ttl_def,
+					    old_zone, old_rpz_okp);
+		if (result != ISC_R_SUCCESS) {
+			if (pview != NULL)
+				dns_view_detach(&pview);
+			return (result);
+		}
+	}
+
+	/*
+	 * If this is a reloading and the parameters and list of policy
+	 * zones are unchanged, then use the same policy data.
+	 * Data for individual zones that must be reloaded will be merged.
+	 */
+	if (old != NULL && memcmp(&old->p, &new->p, sizeof(new->p)) != 0)
+		*old_rpz_okp = ISC_FALSE;
+	if (*old_rpz_okp) {
+		dns_rpz_detach_rpzs(&view->rpzs);
+		dns_rpz_attach_rpzs(pview->rpzs, &view->rpzs);
+	}
+	if (pview != NULL)
+		dns_view_detach(&pview);
+
+	return (ISC_R_SUCCESS);
+}
+
+#define CHECK_RRL(cond, pat, val1, val2)				\
+	do {								\
+		if (!(cond)) {						\
+			cfg_obj_log(obj, ns_g_lctx, ISC_LOG_ERROR,	\
+				    pat, val1, val2);			\
+			result = ISC_R_RANGE;				\
+			goto cleanup;					\
+		    }							\
+	} while (0)
+
+#define CHECK_RRL_RATE(rate, def, max_rate, name)			\
+	do {								\
+		obj = NULL;						\
+		rrl->rate.str = name;					\
+		result = cfg_map_get(map, name, &obj);			\
+		if (result == ISC_R_SUCCESS) {				\
+			rrl->rate.r = cfg_obj_asuint32(obj);		\
+			CHECK_RRL(rrl->rate.r <= max_rate,		\
+				  name" %d > %d",			\
+				  rrl->rate.r, max_rate);		\
+		} else {						\
+			rrl->rate.r = def;				\
+		}							\
+		rrl->rate.scaled = rrl->rate.r;				\
+	} while (0)
+
+static isc_result_t
+configure_rrl(dns_view_t *view, const cfg_obj_t *config, const cfg_obj_t *map) {
+	const cfg_obj_t *obj;
+	dns_rrl_t *rrl;
+	isc_result_t result;
+ 	int min_entries, i, j;
+
+	/*
+	 * Most DNS servers have few clients, but intentinally open
+	 * recursive and authoritative servers often have many.
+	 * So start with a small number of entries unless told otherwise
+	 * to reduce cold-start costs.
+	 */
+	min_entries = 500;
+	obj = NULL;
+	result = cfg_map_get(map, "min-table-size", &obj);
+	if (result == ISC_R_SUCCESS) {
+		min_entries = cfg_obj_asuint32(obj);
+		if (min_entries < 1)
+			min_entries = 1;
+	}
+	result = dns_rrl_init(&rrl, view, min_entries);
+	if (result != ISC_R_SUCCESS)
+		return (result);
+
+	i = ISC_MAX(20000, min_entries);
+	obj = NULL;
+	result = cfg_map_get(map, "max-table-size", &obj);
+	if (result == ISC_R_SUCCESS) {
+		i = cfg_obj_asuint32(obj);
+		CHECK_RRL(i >= min_entries,
+			  "max-table-size %d < min-table-size %d",
+			  i, min_entries);
+	}
+	rrl->max_entries = i;
+
+	CHECK_RRL_RATE(responses_per_second, 0, DNS_RRL_MAX_RATE,
+		       "responses-per-second");
+	CHECK_RRL_RATE(referrals_per_second,
+		       rrl->responses_per_second.r, DNS_RRL_MAX_RATE,
+		       "referrals-per-second");
+	CHECK_RRL_RATE(nodata_per_second,
+		       rrl->responses_per_second.r, DNS_RRL_MAX_RATE,
+		       "nodata-per-second");
+	CHECK_RRL_RATE(nxdomains_per_second,
+		       rrl->responses_per_second.r, DNS_RRL_MAX_RATE,
+		       "nxdomains-per-second");
+	CHECK_RRL_RATE(errors_per_second,
+		       rrl->responses_per_second.r, DNS_RRL_MAX_RATE,
+		       "errors-per-second");
+
+	CHECK_RRL_RATE(all_per_second, 0, DNS_RRL_MAX_RATE,
+		       "all-per-second");
+
+	CHECK_RRL_RATE(slip, 2, DNS_RRL_MAX_SLIP,
+		       "slip");
+
+	i = 15;
+	obj = NULL;
+	result = cfg_map_get(map, "window", &obj);
+	if (result == ISC_R_SUCCESS) {
+		i = cfg_obj_asuint32(obj);
+		CHECK_RRL(i >= 1 && i <= DNS_RRL_MAX_WINDOW,
+			  "window %d < 1 or > %d", i, DNS_RRL_MAX_WINDOW);
+	}
+	rrl->window = i;
+
+	i = 0;
+	obj = NULL;
+	result = cfg_map_get(map, "qps-scale", &obj);
+	if (result == ISC_R_SUCCESS) {
+		i = cfg_obj_asuint32(obj);
+		CHECK_RRL(i >= 1, "invalid 'qps-scale %d'%s", i, "");
+	}
+	rrl->qps_scale = i;
+	rrl->qps = 1.0;
+
+	i = 24;
+	obj = NULL;
+	result = cfg_map_get(map, "ipv4-prefix-length", &obj);
+	if (result == ISC_R_SUCCESS) {
+		i = cfg_obj_asuint32(obj);
+		CHECK_RRL(i >= 8 && i <= 32,
+			  "invalid 'ipv4-prefix-length %d'%s", i, "");
+	}
+	rrl->ipv4_prefixlen = i;
+	if (i == 32)
+		rrl->ipv4_mask = 0xffffffff;
+	else
+		rrl->ipv4_mask = htonl(0xffffffff << (32-i));
+
+	i = 56;
+	obj = NULL;
+	result = cfg_map_get(map, "ipv6-prefix-length", &obj);
+	if (result == ISC_R_SUCCESS) {
+		i = cfg_obj_asuint32(obj);
+		CHECK_RRL(i >= 16 && i <= DNS_RRL_MAX_PREFIX,
+			  "ipv6-prefix-length %d < 16 or > %d",
+			  i, DNS_RRL_MAX_PREFIX);
+	}
+	rrl->ipv6_prefixlen = i;
+	for (j = 0; j < 4; ++j) {
+		if (i <= 0) {
+			rrl->ipv6_mask[j] = 0;
+		} else if (i < 32) {
+			rrl->ipv6_mask[j] = htonl(0xffffffff << (32-i));
+		} else {
+			rrl->ipv6_mask[j] = 0xffffffff;
+		}
+		i -= 32;
+	}
+
+	obj = NULL;
+	result = cfg_map_get(map, "exempt-clients", &obj);
+	if (result == ISC_R_SUCCESS) {
+		result = cfg_acl_fromconfig(obj, config, ns_g_lctx,
+					    ns_g_aclconfctx, ns_g_mctx,
+					    0, &rrl->exempt);
+		CHECK_RRL(result == ISC_R_SUCCESS,
+			  "invalid %s%s", "address match list", "");
+	}
+
+	obj = NULL;
+	result = cfg_map_get(map, "log-only", &obj);
+	if (result == ISC_R_SUCCESS && cfg_obj_asboolean(obj))
+		rrl->log_only = ISC_TRUE;
+	else
+		rrl->log_only = ISC_FALSE;
+
+	return (ISC_R_SUCCESS);
+
+ cleanup:
+	dns_rrl_view_destroy(view);
+	return (result);
+}
+
 /*
  * Configure 'view' according to 'vconfig', taking defaults from 'config'
  * where values are missing in 'vconfig'.
@@ -1705,7 +2015,7 @@
 	dns_acl_t *clients = NULL, *mapped = NULL, *excluded = NULL;
 	unsigned int query_timeout, ndisp;
 	struct cfg_context *nzctx;
-	dns_rpz_zone_t *rpz;
+	isc_boolean_t old_rpz_ok;
 
 	REQUIRE(DNS_VIEW_VALID(view));
 
@@ -1810,44 +2120,7 @@
 	obj = NULL;
 	if (view->rdclass == dns_rdataclass_in && need_hints &&
 	    ns_config_get(maps, "response-policy", &obj) == ISC_R_SUCCESS) {
-		const cfg_obj_t *rpz_obj;
-		isc_boolean_t recursive_only_def;
-		dns_ttl_t ttl_def;
-
-		rpz_obj = cfg_tuple_get(obj, "recursive-only");
-		if (!cfg_obj_isvoid(rpz_obj) &&
-		    !cfg_obj_asboolean(rpz_obj))
-			recursive_only_def = ISC_FALSE;
-		else
-			recursive_only_def = ISC_TRUE;
-
-		rpz_obj = cfg_tuple_get(obj, "break-dnssec");
-		if (!cfg_obj_isvoid(rpz_obj) &&
-		    cfg_obj_asboolean(rpz_obj))
-			view->rpz_break_dnssec = ISC_TRUE;
-		else
-			view->rpz_break_dnssec = ISC_FALSE;
-
-		rpz_obj = cfg_tuple_get(obj, "max-policy-ttl");
-		if (cfg_obj_isuint32(rpz_obj))
-			ttl_def = cfg_obj_asuint32(rpz_obj);
-		else
-			ttl_def = DNS_RPZ_MAX_TTL_DEFAULT;
-
-		rpz_obj = cfg_tuple_get(obj, "min-ns-dots");
-		if (cfg_obj_isuint32(rpz_obj))
-			view->rpz_min_ns_labels = cfg_obj_asuint32(rpz_obj) + 1;
-		else
-			view->rpz_min_ns_labels = 2;
-
-		element = cfg_list_first(cfg_tuple_get(obj, "zone list"));
-		while (element != NULL) {
-			result = configure_rpz(view, element,
-					       recursive_only_def, ttl_def);
-			if (result != ISC_R_SUCCESS)
-				goto cleanup;
-			element = cfg_list_next(element);
-		}
+		CHECK(configure_rpz(view, obj, &old_rpz_ok));
 	}
 
 	/*
@@ -1868,22 +2141,29 @@
 	{
 		const cfg_obj_t *zconfig = cfg_listelt_value(element);
 		CHECK(configure_zone(config, zconfig, vconfig, mctx, view,
-				     actx, ISC_FALSE));
+				     actx, ISC_FALSE, old_rpz_ok));
 	}
 
-	for (rpz = ISC_LIST_HEAD(view->rpz_zones);
-	     rpz != NULL;
-	     rpz = ISC_LIST_NEXT(rpz, link))
-	{
-		if (!rpz->defined) {
-			char namebuf[DNS_NAME_FORMATSIZE];
+	/*
+	 * Check that a master or slave zone was found for each
+	 * zone named in the response policy statement.
+	 */
+	if (view->rpzs != NULL) {
+		dns_rpz_num_t n;
 
-			dns_name_format(&rpz->origin, namebuf, sizeof(namebuf));
-			cfg_obj_log(obj, ns_g_lctx, DNS_RPZ_ERROR_LEVEL,
-				    "'%s' is not a master or slave zone",
-				    namebuf);
-			result = ISC_R_NOTFOUND;
-			goto cleanup;
+		for (n = 0; n < view->rpzs->p.num_zones; ++n)
+		{
+			if ((view->rpzs->defined & DNS_RPZ_ZBIT(n)) == 0) {
+				char namebuf[DNS_NAME_FORMATSIZE];
+
+				dns_name_format(&view->rpzs->zones[n]->origin,
+						namebuf, sizeof(namebuf));
+				cfg_obj_log(obj, ns_g_lctx, DNS_RPZ_ERROR_LEVEL,
+					    "'%s' is not a master or slave zone",
+					    namebuf);
+				result = ISC_R_NOTFOUND;
+				goto cleanup;
+			}
 		}
 	}
 
@@ -1909,7 +2189,7 @@
 			const cfg_obj_t *zconfig = cfg_listelt_value(element);
 			CHECK(configure_zone(config, zconfig, vconfig,
 					     mctx, view, actx,
-					     ISC_TRUE));
+					     ISC_TRUE, ISC_FALSE));
 		}
 	}
 
@@ -3043,6 +3323,14 @@
 		}
 	}
 
+	obj = NULL;
+	result = ns_config_get(maps, "rate-limit", &obj);
+	if (result == ISC_R_SUCCESS) {
+		result = configure_rrl(view, config, obj);
+		if (result != ISC_R_SUCCESS)
+			goto cleanup;
+	}
+
 	result = ISC_R_SUCCESS;
 
  cleanup:
@@ -3375,7 +3663,8 @@
 static isc_result_t
 configure_zone(const cfg_obj_t *config, const cfg_obj_t *zconfig,
 	       const cfg_obj_t *vconfig, isc_mem_t *mctx, dns_view_t *view,
-	       cfg_aclconfctx_t *aclconf, isc_boolean_t added)
+	       cfg_aclconfctx_t *aclconf, isc_boolean_t added,
+	       isc_boolean_t old_rpz_ok)
 {
 	dns_view_t *pview = NULL;	/* Production view */
 	dns_zone_t *zone = NULL;	/* New or reused zone */
@@ -3396,8 +3685,7 @@
 	const char *zname;
 	dns_rdataclass_t zclass;
 	const char *ztypestr;
-	isc_boolean_t is_rpz;
-	dns_rpz_zone_t *rpz;
+	dns_rpz_num_t rpz_num;
 
 	options = NULL;
 	(void)cfg_map_get(config, "options", &options);
@@ -3559,18 +3847,15 @@
 	INSIST(dupzone == NULL);
 
 	/*
-	 * Note whether this is a response policy zone.
+	 * Note whether this is a response policy zone and which one if so.
 	 */
-	is_rpz = ISC_FALSE;
-	for (rpz = ISC_LIST_HEAD(view->rpz_zones);
-	     rpz != NULL;
-	     rpz = ISC_LIST_NEXT(rpz, link))
-	{
-		if (dns_name_equal(&rpz->origin, origin)) {
-			is_rpz = ISC_TRUE;
-			rpz->defined = ISC_TRUE;
+	for (rpz_num = 0; ; ++rpz_num) {
+		if (view->rpzs == NULL || rpz_num >= view->rpzs->p.num_zones) {
+			rpz_num = DNS_RPZ_INVALID_NUM;
 			break;
 		}
+		if (dns_name_equal(&view->rpzs->zones[rpz_num]->origin, origin))
+			break;
 	}
 
 	/*
@@ -3581,7 +3866,9 @@
 	 *   - The zone is compatible with the config
 	 *     options (e.g., an existing master zone cannot
 	 *     be reused if the options specify a slave zone)
-	 *   - The zone was and is or was not and is not a policy zone
+	 *   - The zone was not and is still not a response policy zone
+	 *     or the zone is a policy zone with an unchanged number
+	 *     and we are using the old policy zone summary data.
 	 */
 	result = dns_viewlist_find(&ns_g_server->viewlist, view->name,
 				   view->rdclass, &pview);
@@ -3595,7 +3882,8 @@
 	if (zone != NULL && !ns_zone_reusable(zone, zconfig))
 		dns_zone_detach(&zone);
 
-	if (zone != NULL && is_rpz != dns_zone_get_rpz(zone))
+	if (zone != NULL && (rpz_num != dns_zone_get_rpz_num(zone) ||
+			     (rpz_num != DNS_RPZ_INVALID_NUM && !old_rpz_ok)))
 		dns_zone_detach(&zone);
 
 	if (zone != NULL) {
@@ -3620,8 +3908,8 @@
 		dns_zone_setstats(zone, ns_g_server->zonestats);
 	}
 
-	if (is_rpz) {
-		result = dns_zone_rpz_enable(zone);
+	if (rpz_num != DNS_RPZ_INVALID_NUM) {
+		result = dns_zone_rpz_enable(zone, view->rpzs, rpz_num);
 		if (result != ISC_R_SUCCESS) {
 			isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
 				      NS_LOGMODULE_SERVER, ISC_LOG_ERROR,
@@ -7834,7 +8122,8 @@
 	RUNTIME_CHECK(result == ISC_R_SUCCESS);
 	dns_view_thaw(view);
 	result = configure_zone(cfg->config, parms, vconfig,
-				server->mctx, view, cfg->actx, ISC_FALSE);
+				server->mctx, view, cfg->actx, ISC_FALSE,
+				ISC_FALSE);
 	dns_view_freeze(view);
 	isc_task_endexclusive(server->task);
 	if (result != ISC_R_SUCCESS)
diff -r -u bin/named/statschannel.c-orig bin/named/statschannel.c
--- bin/named/statschannel.c-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/named/statschannel.c	2004-01-01 00:00:00.000000000 +0000
@@ -206,6 +206,10 @@
 	SET_NSSTATDESC(updatebadprereq,
 		       "updates rejected due to prerequisite failure",
 		       "UpdateBadPrereq");
+	SET_NSSTATDESC(ratedropped, "responses dropped for rate limits",
+		       "RateDropped");
+	SET_NSSTATDESC(rateslipped, "responses truncated for rate limits",
+		       "RateSlipped");
 	SET_NSSTATDESC(rpz_rewrites, "response policy zone rewrites",
 		       "RPZRewrites");
 	INSIST(i == dns_nsstatscounter_max);
diff -r -u bin/tests/system/README-orig bin/tests/system/README
--- bin/tests/system/README-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/README	2004-01-01 00:00:00.000000000 +0000
@@ -17,6 +17,7 @@
   nsupdate/	Dynamic update and IXFR tests
   resolver/     Regression tests for resolver bugs that have been fixed
 		(not a complete resolver test suite)
+  rrl/		query rate limiting
   rpz/		Tests of response policy zone (RPZ) rewriting
   stub/		Tests of stub zone functionality
   unknown/	Unknown type and class tests
diff -r -u bin/tests/system/conf.sh.in-orig bin/tests/system/conf.sh.in
--- bin/tests/system/conf.sh.in-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/conf.sh.in	2004-01-01 00:00:00.000000000 +0000
@@ -62,7 +62,7 @@
          database dlv dlvauto dlz dlzexternal dname dns64 dnssec ecdsa
          formerr forward glue gost ixfr inline limits logfileconfig
          lwresd masterfile masterformat metadata notify nsupdate pending
-	 pkcs11 redirect resolver rndc rpz rrsetorder rsabigexponent
+	 pkcs11 redirect resolver rndc rpz rrl rrsetorder rsabigexponent
 	 smartsign sortlist spf staticstub stub tkey tsig tsiggss unknown
 	 upforwd verify views wildcard xfer xferquota zonechecks"
 
diff -r -u bin/tests/system/rpz/Makefile.in-orig bin/tests/system/rpz/Makefile.in
--- bin/tests/system/rpz/Makefile.in-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rpz/Makefile.in	2004-01-01 00:00:00.000000000 +0000
@@ -12,8 +12,6 @@
 # OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 # PERFORMANCE OF THIS SOFTWARE.
 
-# $Id$
-
 
 srcdir =	@srcdir@
 VPATH =		@srcdir@
diff -r -u bin/tests/system/rpz/clean.sh-orig bin/tests/system/rpz/clean.sh
--- bin/tests/system/rpz/clean.sh-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rpz/clean.sh	2004-01-01 00:00:00.000000000 +0000
@@ -12,8 +12,6 @@
 # OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 # PERFORMANCE OF THIS SOFTWARE.
 
-# $Id$
-
 
 
 # Clean up after rpz tests.
diff -r -u bin/tests/system/rpz/ns1/named.conf-orig bin/tests/system/rpz/ns1/named.conf
--- bin/tests/system/rpz/ns1/named.conf-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rpz/ns1/named.conf	2004-01-01 00:00:00.000000000 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011, 2013  Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (C) 2011-2013  Internet Systems Consortium, Inc. ("ISC")
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -14,8 +14,6 @@
  * PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id$ */
-
 
 controls { /* empty */ };
 
diff -r -u bin/tests/system/rpz/ns1/root.db-orig bin/tests/system/rpz/ns1/root.db
--- bin/tests/system/rpz/ns1/root.db-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rpz/ns1/root.db	2004-01-01 00:00:00.000000000 +0000
@@ -12,8 +12,6 @@
 ; OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 ; PERFORMANCE OF THIS SOFTWARE.
 
-; $Id$
-
 
 $TTL	120
 .		SOA	ns. hostmaster.ns. ( 1 3600 1200 604800 60 )
diff -r -u bin/tests/system/rpz/ns2/base-tld2s.db-orig bin/tests/system/rpz/ns2/base-tld2s.db
--- bin/tests/system/rpz/ns2/base-tld2s.db-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rpz/ns2/base-tld2s.db	2004-01-01 00:00:00.000000000 +0000
@@ -1,4 +1,4 @@
-; Copyright (C) 2012, 2013  Internet Systems Consortium, Inc. ("ISC")
+; Copyright (C) 2012  Internet Systems Consortium, Inc. ("ISC")
 ;
 ; Permission to use, copy, modify, and/or distribute this software for any
 ; purpose with or without fee is hereby granted, provided that the above
@@ -12,8 +12,6 @@
 ; OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 ; PERFORMANCE OF THIS SOFTWARE.
 
-; $Id$
-
 
 
 ; RPZ rewrite responses from this signed zone
diff -r -u bin/tests/system/rpz/ns2/hints-orig bin/tests/system/rpz/ns2/hints
--- bin/tests/system/rpz/ns2/hints-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rpz/ns2/hints	2004-01-01 00:00:00.000000000 +0000
@@ -1,4 +1,4 @@
-; Copyright (C) 2011, 2013  Internet Systems Consortium, Inc. ("ISC")
+; Copyright (C) 2011-2013  Internet Systems Consortium, Inc. ("ISC")
 ;
 ; Permission to use, copy, modify, and/or distribute this software for any
 ; purpose with or without fee is hereby granted, provided that the above
@@ -12,8 +12,6 @@
 ; OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 ; PERFORMANCE OF THIS SOFTWARE.
 
-; $Id$
-
 
 .	120	NS	ns.
 ns.	120	A	10.53.0.1
diff -r -u bin/tests/system/rpz/ns2/named.conf-orig bin/tests/system/rpz/ns2/named.conf
--- bin/tests/system/rpz/ns2/named.conf-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rpz/ns2/named.conf	2004-01-01 00:00:00.000000000 +0000
@@ -14,8 +14,6 @@
  * PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id$ */
-
 
 
 controls { /* empty */ };
diff -r -u bin/tests/system/rpz/ns2/tld2.db-orig bin/tests/system/rpz/ns2/tld2.db
--- bin/tests/system/rpz/ns2/tld2.db-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rpz/ns2/tld2.db	2004-01-01 00:00:00.000000000 +0000
@@ -12,8 +12,6 @@
 ; OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 ; PERFORMANCE OF THIS SOFTWARE.
 
-; $Id$
-
 
 
 ; RPZ rewrite responses from this zone
@@ -111,6 +109,9 @@
 		A	192.168.5.2
 		TXT	"a5-1-2 tld2 text"
 
+a5-2		A	192.168.5.2
+		TXT	"a5-2 tld2 text"
+
 a5-3		A	192.168.5.3
 		TXT	"a5-3 tld2 text"
 
diff -r -u bin/tests/system/rpz/ns3/base.db-orig bin/tests/system/rpz/ns3/base.db
--- bin/tests/system/rpz/ns3/base.db-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rpz/ns3/base.db	2004-01-01 00:00:00.000000000 +0000
@@ -12,8 +12,6 @@
 ; OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 ; PERFORMANCE OF THIS SOFTWARE.
 
-; $Id$
-
 
 
 ; RPZ test
diff -r -u bin/tests/system/rpz/ns3/hints-orig bin/tests/system/rpz/ns3/hints
--- bin/tests/system/rpz/ns3/hints-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rpz/ns3/hints	2004-01-01 00:00:00.000000000 +0000
@@ -1,4 +1,4 @@
-; Copyright (C) 2011, 2013  Internet Systems Consortium, Inc. ("ISC")
+; Copyright (C) 2011-2013  Internet Systems Consortium, Inc. ("ISC")
 ;
 ; Permission to use, copy, modify, and/or distribute this software for any
 ; purpose with or without fee is hereby granted, provided that the above
@@ -12,8 +12,6 @@
 ; OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 ; PERFORMANCE OF THIS SOFTWARE.
 
-; $Id$
-
 
 .	120	NS	ns.
 ns.	120	A	10.53.0.1
diff -r -u bin/tests/system/rpz/ns3/named.conf-orig bin/tests/system/rpz/ns3/named.conf
--- bin/tests/system/rpz/ns3/named.conf-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rpz/ns3/named.conf	2004-01-01 00:00:00.000000000 +0000
@@ -14,8 +14,6 @@
  * PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id$ */
-
 
 
 /*
@@ -46,7 +44,10 @@
 	    zone "bl-cname"	policy cname txt-only.tld2.;
 	    zone "bl-wildcname"	policy cname *.tld4.;
 	    zone "bl-garden"	policy cname a12.tld2.;
-	} min-ns-dots 0;
+	    zone "bl-drop"	policy drop;
+	} min-ns-dots 0
+	# qname-wait-recurse no
+	;
 };
 
 key rndc_key {
@@ -58,7 +59,6 @@
 };
 
 
-// include "../trusted.conf";
 zone "." { type hint; file "hints"; };
 
 zone "bl."		{type master; file "bl.db";
@@ -83,6 +83,8 @@
 				allow-update {any;};};
 zone "bl-garden."	{type master; file "bl-garden.db";
 				allow-update {any;};};
+zone "bl-drop."		{type master; file "bl-drop.db";
+				allow-update {any;};};
 
 zone "crash1.tld2"	{type master; file "crash1";};
 zone "crash2.tld3."	{type master; file "crash2";};
diff -r -u bin/tests/system/rpz/ns4/hints-orig bin/tests/system/rpz/ns4/hints
--- bin/tests/system/rpz/ns4/hints-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rpz/ns4/hints	2004-01-01 00:00:00.000000000 +0000
@@ -1,4 +1,4 @@
-; Copyright (C) 2011, 2013  Internet Systems Consortium, Inc. ("ISC")
+; Copyright (C) 2011-2013  Internet Systems Consortium, Inc. ("ISC")
 ;
 ; Permission to use, copy, modify, and/or distribute this software for any
 ; purpose with or without fee is hereby granted, provided that the above
@@ -12,8 +12,6 @@
 ; OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 ; PERFORMANCE OF THIS SOFTWARE.
 
-; $Id$
-
 
 .	120	NS	ns.
 ns.	120	A	10.53.0.1
diff -r -u bin/tests/system/rpz/ns4/named.conf-orig bin/tests/system/rpz/ns4/named.conf
--- bin/tests/system/rpz/ns4/named.conf-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rpz/ns4/named.conf	2004-01-01 00:00:00.000000000 +0000
@@ -14,8 +14,6 @@
  * PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id$ */
-
 
 controls { /* empty */ };
 
diff -r -u bin/tests/system/rpz/ns4/tld4.db-orig bin/tests/system/rpz/ns4/tld4.db
--- bin/tests/system/rpz/ns4/tld4.db-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rpz/ns4/tld4.db	2004-01-01 00:00:00.000000000 +0000
@@ -12,8 +12,6 @@
 ; OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 ; PERFORMANCE OF THIS SOFTWARE.
 
-; $Id$
-
 
 ; RPZ rewrite responses from this zone
 
diff -r -u bin/tests/system/rpz/ns5/hints-orig bin/tests/system/rpz/ns5/hints
--- bin/tests/system/rpz/ns5/hints-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rpz/ns5/hints	2004-01-01 00:00:00.000000000 +0000
@@ -12,8 +12,6 @@
 ; OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 ; PERFORMANCE OF THIS SOFTWARE.
 
-; $Id$
-
 
 .	120	NS	ns.
 ns.	120	A	10.53.0.1
diff -r -u bin/tests/system/rpz/ns5/named.conf-orig bin/tests/system/rpz/ns5/named.conf
--- bin/tests/system/rpz/ns5/named.conf-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rpz/ns5/named.conf	2004-01-01 00:00:00.000000000 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2012, 2013  Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (C) 2012  Internet Systems Consortium, Inc. ("ISC")
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -14,8 +14,6 @@
  * PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id$ */
-
 
 
 /*
@@ -56,3 +54,20 @@
 zone "bl0."		{type master; file "bl.db"; };
 zone "bl1."		{type master; file "bl.db"; };
 zone "bl2."		{type master; file "bl.db"; };
+zone "bl3."		{type master; file "bl.db"; };
+zone "bl4."		{type master; file "bl.db"; };
+zone "bl5."		{type master; file "bl.db"; };
+zone "bl6."		{type master; file "bl.db"; };
+zone "bl7."		{type master; file "bl.db"; };
+zone "bl8."		{type master; file "bl.db"; };
+zone "bl9."		{type master; file "bl.db"; };
+zone "bl10."		{type master; file "bl.db"; };
+zone "bl11."		{type master; file "bl.db"; };
+zone "bl12."		{type master; file "bl.db"; };
+zone "bl13."		{type master; file "bl.db"; };
+zone "bl14."		{type master; file "bl.db"; };
+zone "bl15."		{type master; file "bl.db"; };
+zone "bl16."		{type master; file "bl.db"; };
+zone "bl17."		{type master; file "bl.db"; };
+zone "bl18."		{type master; file "bl.db"; };
+zone "bl19."		{type master; file "bl.db"; };
diff -r -u bin/tests/system/rpz/ns5/tld5.db-orig bin/tests/system/rpz/ns5/tld5.db
--- bin/tests/system/rpz/ns5/tld5.db-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rpz/ns5/tld5.db	2004-01-01 00:00:00.000000000 +0000
@@ -1,4 +1,4 @@
-; Copyright (C) 2013  Internet Systems Consortium, Inc. ("ISC")
+; Copyright (C) 2012  Internet Systems Consortium, Inc. ("ISC")
 ;
 ; Permission to use, copy, modify, and/or distribute this software for any
 ; purpose with or without fee is hereby granted, provided that the above
diff -r -u bin/tests/system/rpz/qperf.sh-orig bin/tests/system/rpz/qperf.sh
--- bin/tests/system/rpz/qperf.sh-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rpz/qperf.sh	2004-01-01 00:00:00.000000000 +0000
@@ -1,6 +1,6 @@
 #! /bin/sh
 #
-# Copyright (C) 2012, 2013  Internet Systems Consortium, Inc. ("ISC")
+# Copyright (C) 2012  Internet Systems Consortium, Inc. ("ISC")
 #
 # Permission to use, copy, modify, and/or distribute this software for any
 # purpose with or without fee is hereby granted, provided that the above
@@ -14,8 +14,6 @@
 # OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 # PERFORMANCE OF THIS SOFTWARE.
 
-# $Id$
-
 
 for QDIR in `echo "$PATH" | tr : ' '` ../../../../contrib/queryperf; do
     QPERF=$QDIR/queryperf
diff -r -u bin/tests/system/rpz/rpz.c-orig bin/tests/system/rpz/rpz.c
--- bin/tests/system/rpz/rpz.c-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rpz/rpz.c	2004-01-01 00:00:00.000000000 +0000
@@ -14,8 +14,6 @@
  * PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id$ */
-
 
 #include <config.h>
 
diff -r -u bin/tests/system/rpz/setup.sh-orig bin/tests/system/rpz/setup.sh
--- bin/tests/system/rpz/setup.sh-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rpz/setup.sh	2004-01-01 00:00:00.000000000 +0000
@@ -14,8 +14,6 @@
 # OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 # PERFORMANCE OF THIS SOFTWARE.
 
-# $Id$
-
 
 set -e
 
@@ -30,7 +28,7 @@
 #	bl-{given,disabled,passthru,no-data,nxdomain,cname,wildcard,garden}
 #	are used to check policy overrides in named.conf.
 #	NO-OP is an obsolete synonym for PASSHTRU
-for NM in '' -2 -given -disabled -passthru -no-op -nodata -nxdomain -cname -wildcname -garden; do
+for NM in '' -2 -given -disabled -passthru -no-op -nodata -nxdomain -cname -wildcname -garden -drop; do
     sed -e "/SOA/s/blx/bl$NM/g" ns3/base.db >ns3/bl$NM.db
 done
 
@@ -51,7 +49,10 @@
 # Performance checks.
 cat <<EOF >ns5/rpz-switch
 response-policy {
-	zone "bl0"; zone "bl1"; zone "bl2";
+	zone "bl0"; zone "bl1"; zone "bl2"; zone "bl3"; zone "bl4";
+	zone "bl5"; zone "bl6"; zone "bl7"; zone "bl8"; zone "bl9";
+	zone "bl10"; zone "bl11"; zone "bl12"; zone "bl13"; zone "bl14";
+	zone "bl15"; zone "bl16"; zone "bl17"; zone "bl18"; zone "bl19";
     } recursive-only no
 	max-policy-ttl 90
 	# min-ns-dots 0
diff -r -u bin/tests/system/rpz/test1-orig bin/tests/system/rpz/test1
--- bin/tests/system/rpz/test1-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rpz/test1	2004-01-01 00:00:00.000000000 +0000
@@ -24,13 +24,13 @@
 ; QNAME tests
 
 ; NXDOMAIN
-;	2, 20, 25
+;	2, 25
 update add  a0-1.tld2.bl.	300 CNAME .
 ; NODATA
-;	3, 21
+;	3
 update add  a3-1.tld2.bl.	300 CNAME *.
 ; and no assert-botch
-;	4, 5, 22, 23
+;	4, 5
 update add  a3-2.tld2.bl.	300 DNAME example.com.
 ;
 ; NXDOMAIN for a4-2-cname.tld2 via its target a4-2.tld2.
@@ -77,6 +77,14 @@
 ;	19
 update add  a4-6.tld2.bl.	300 CNAME .
 update add  a4-6-cname.tld2.bl.	300 A	127.0.0.17
+; no change instead of NXDOMAIN because +norecurse
+;	20
+update add  a5-2.tld2.bl.	300 CNAME .
+; no change instead of NODATA because +norecurse
+;	21
+update add  a5-3.tld2.bl.	300 CNAME *.
+;	22, 23
+update add  a5-4.tld2.bl.	300 DNAME example.com.
 ;
 ; assert in rbtdb.c
 ;	24
@@ -84,4 +92,6 @@
 ; DO=1 without signatures, DO=0 with signatures are rewritten
 ;	26 - 27
 update add  a0-1.tld2s.bl.	300 CNAME .
+;	32
+update add  a3-8.tld2.bl.	300 CNAME rpz-drop.
 send
diff -r -u bin/tests/system/rpz/test2-orig bin/tests/system/rpz/test2
--- bin/tests/system/rpz/test2-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rpz/test2	2004-01-01 00:00:00.000000000 +0000
@@ -58,7 +58,7 @@
 send
 
 ; prefer QNAME to IP for a5-4.tld2
-;	13
+;	13, 14
 update add 32.4.5.168.192.rpz-ip.bl	300 CNAME a12.tld2.
 update add a5-4.tld2.bl			300 CNAME a14.tld4.
 ;
@@ -72,3 +72,8 @@
 send
 update add c2.crash2.tld3.bl-2		300 A	127.0.0.16
 send
+
+; client-IP address trigger
+;	17
+update add 32.1.0.53.10.rpz-client-ip.bl 300 A	127.0.0.17
+send
diff -r -u bin/tests/system/rpz/test3-orig bin/tests/system/rpz/test3
--- bin/tests/system/rpz/test3-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rpz/test3	2004-01-01 00:00:00.000000000 +0000
@@ -1,4 +1,4 @@
-; Copyright (C) 2011, 2013  Internet Systems Consortium, Inc. ("ISC")
+; Copyright (C) 2011-2013  Internet Systems Consortium, Inc. ("ISC")
 ;
 ; Permission to use, copy, modify, and/or distribute this software for any
 ; purpose with or without fee is hereby granted, provided that the above
diff -r -u bin/tests/system/rpz/test4-orig bin/tests/system/rpz/test4
--- bin/tests/system/rpz/test4-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rpz/test4	2004-01-01 00:00:00.000000000 +0000
@@ -1,4 +1,4 @@
-; Copyright (C) 2011, 2013  Internet Systems Consortium, Inc. ("ISC")
+; Copyright (C) 2011-2013  Internet Systems Consortium, Inc. ("ISC")
 ;
 ; Permission to use, copy, modify, and/or distribute this software for any
 ; purpose with or without fee is hereby granted, provided that the above
diff -r -u bin/tests/system/rpz/test4a-orig bin/tests/system/rpz/test4a
--- bin/tests/system/rpz/test4a-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rpz/test4a	2004-01-01 00:00:00.000000000 +0000
@@ -1,4 +1,4 @@
-; Copyright (C) 2013  Internet Systems Consortium, Inc. ("ISC")
+; Copyright (C) 2011-2013  Internet Systems Consortium, Inc. ("ISC")
 ;
 ; Permission to use, copy, modify, and/or distribute this software for any
 ; purpose with or without fee is hereby granted, provided that the above
diff -r -u bin/tests/system/rpz/test5-orig bin/tests/system/rpz/test5
--- bin/tests/system/rpz/test5-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rpz/test5	2004-01-01 00:00:00.000000000 +0000
@@ -57,3 +57,6 @@
 ;	16
 update add  a3-16.tld2.bl.	    300 A 127.0.0.16
 send
+;	18
+update add  a3-18.tld2.bl-drop.	    300 A 127.0.0.18
+send
diff -r -u bin/tests/system/rpz/tests.sh-orig bin/tests/system/rpz/tests.sh
--- bin/tests/system/rpz/tests.sh-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rpz/tests.sh	2004-01-01 00:00:00.000000000 +0000
@@ -12,8 +12,6 @@
 # OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 # PERFORMANCE OF THIS SOFTWARE.
 
-# $Id$
-
 
 # test response policy zones (RPZ)
 
@@ -21,15 +19,19 @@
 . $SYSTEMTESTTOP/conf.sh
 
 ns=10.53.0
-ns1=$ns.1			    # root, defining the others
-ns2=$ns.2			    # server whose answers are rewritten
-ns3=$ns.3			    # resolve that does the rewriting
-ns4=$ns.4			    # another server that is rewritten
-ns5=$ns.5			    # check performance with this server
+ns1=$ns.1		# root, defining the others
+ns2=$ns.2		# authoritative server whose answers are rewritten
+ns3=$ns.3		# resolver that does the rewriting
+ns4=$ns.4		# another authoritative server that is rewritten
+ns5=$ns.5		# resolver to check performance and give un-rewritten
+			#	responses for comparisons
 
 HAVE_CORE=
 SAVE_RESULTS=
-NS3_STATS=47
+
+# "response policy zone rewrites" from ns3/named.stats if none of the
+# conditional tests are done.
+NS3_STATS=50
 
 USAGE="$0: [-x]"
 while getopts "x" c; do
@@ -87,10 +89,10 @@
 # (re)load the reponse policy zones with the rules in the file $TEST_FILE
 load_db () {
     if test -n "$TEST_FILE"; then
-	$NSUPDATE -v $TEST_FILE || {
+	if ! $NSUPDATE -v $TEST_FILE; then
 	    echo "I:failed to update policy zone with $TEST_FILE"
 	    exit 1
-	}
+	fi
     fi
 }
 
@@ -213,6 +215,13 @@
     ckresult "$*" proto.nodata
 }
 
+# check dropped response
+drop () {
+    make_dignm
+    digcmd $* >$DIGNM
+    ckresult "$*" proto.drop
+}
+
 # check rewrite to an address
 #   modify the output so that it is easily compared, but save the original line
 # $1=IPv4 address  $2=digcmd args  $3=optional TTL
@@ -239,7 +248,7 @@
 nochange () {
     make_dignm
     digcmd $* >$DIGNM
-    digcmd $* @$ns2 >${DIGNM}_OK
+    digcmd $* @$ns5 >${DIGNM}_OK
     ckresult "$*" ${DIGNM}_OK && clean_result ${DIGNM}_OK
 }
 
@@ -254,6 +263,12 @@
 # make prototype files to check against rewritten results
 digcmd nonexistent @$ns2 >proto.nxdomain
 digcmd txt-only.tld2 @$ns2 >proto.nodata
+cat <<EOF >proto.drop
+
+; hello
+;; global options:
+;; connection timed out; no servers could be reached
+EOF
 
 
 status=0
@@ -278,18 +293,19 @@
 addr 57.57.57.57  a3-7.sub1.tld2	# 17 wildcard CNAME
 addr 127.0.0.16	  a4-5-cname3.tld2	# 18 CNAME chain
 addr 127.0.0.17	  a4-6-cname3.tld2	# 19 stop short in CNAME chain
-nochange a0-1.tld2	    +norecurse	# 20 check that RD=1 is required
-nochange a3-1.tld2	    +norecurse	# 21
-nochange a3-2.tld2	    +norecurse	# 22
-nochange sub.a3-2.tld2	    +norecurse	# 23
+nochange a5-2.tld2	    +norecurse	# 20 check that RD=1 is required
+nochange a5-3.tld2	    +norecurse	# 21
+nochange a5-4.tld2	    +norecurse	# 22
+nochange sub.a5-4.tld2	    +norecurse	# 23
 nxdomain c1.crash2.tld3			# 24 assert in rbtdb.c
 nxdomain a0-1.tld2	    +dnssec	# 25 simple DO=1 without signatures
-nxdomain a0-1.tld2s			# 26 simple DO=0 with signatures
+nxdomain a0-1.tld2s	    +nodnssec	# 26 simple DO=0 with signatures
 nochange a0-1.tld2s	    +dnssec	# 27 simple DO=1 with signatures
 nxdomain a0-1s-cname.tld2s  +dnssec	# 28 DNSSEC too early in CNAME chain
 nochange a0-1-scname.tld2   +dnssec	# 29 DNSSEC on target in CNAME chain
-nochange a0-1.tld2s srv +auth +dnssec	# 30 no write for +DNSSEC and no record
-nxdomain a0-1.tld2s srv			# 31
+nochange a0-1.tld2s srv +auth +dnssec	# 30 no write for DNSSEC and no record
+nxdomain a0-1.tld2s srv	    +nodnssec	# 31
+drop a3-8.tld2				# 32 drop
 end_group
 
 start_group "IP rewrites" test2
@@ -305,10 +321,11 @@
 nochange a4-1-aaaa.tld2 -taaaa		# 10
 addr 127.0.0.1	 a5-1-2.tld2		# 11 prefer smallest policy address
 addr 127.0.0.1	 a5-3.tld2		# 12 prefer first conflicting IP zone
-addr 14.14.14.14 a5-4.tld2		# 13 prefer QNAME to IP
-nochange a5-4.tld2	    +norecurse	# 14 check that RD=1 is required
+nochange a5-4.tld2	    +norecurse	# 13 check that RD=1 is required for #14
+addr 14.14.14.14 a5-4.tld2		# 14 prefer QNAME to IP
 nochange a4-4.tld2			# 15 PASSTHRU
 nxdomain c2.crash2.tld3			# 16 assert in rbtdb.c
+addr 127.0.0.17 "a4-4.tld2 -b $ns1"	# 17 client-IP address trigger
 end_group
 
 # check that IP addresses for previous group were deleted from the radix tree
@@ -356,15 +373,15 @@
     nochange a3-1.tld4			# 4 different NS IP address
     end_group
 
-#    start_group "walled garden NSIP rewrites" test4a
-#    addr 41.41.41.41 a3-1.tld2		# 1 walled garden for all of tld2
-#    addr 2041::41   'a3-1.tld2 AAAA'	# 2 walled garden for all of tld2
-#    here a3-1.tld2 TXT <<'EOF'		# 3 text message for all of tld2
-#    ;; status: NOERROR, x
-#    a3-1.tld2.	    x	IN	TXT   "NSIP walled garden"
-#EOF
-#    end_group
-    NS3_STATS=`expr $NS3_STATS + 1`
+    start_group "walled garden NSIP rewrites" test4a
+    addr 41.41.41.41 a3-1.tld2		# 1 walled garden for all of tld2
+    addr 2041::41   'a3-1.tld2 AAAA'	# 2 walled garden for all of tld2
+    here a3-1.tld2 TXT <<'EOF'		# 3 text message for all of tld2
+    ;; status: NOERROR, x
+    a3-1.tld2.	    x	IN	TXT   "NSIP walled garden"
+EOF
+    end_group
+    NS3_STATS=`expr $NS3_STATS + 4`
 else
     echo "I:NSIP not checked; named configured with --disable-rpz-nsip"
 fi
@@ -393,6 +410,7 @@
 addr 12.12.12.12 a3-15.tld2		# 15 bl-garden	via CNAME to a12.tld2
 addr 127.0.0.16 a3-16.tld2	    100	# 16 bl		    max-policy-ttl 100
 addr 17.17.17.17 "a3-17.tld2 @$ns5" 90	# 17 ns5 bl	    max-policy-ttl 90
+drop a3-18.tld2				# 18 bl-drop
 end_group
 
 # check that miscellaneous bugs are still absent
@@ -412,6 +430,9 @@
 end_group
 
 
+ckstats $ns3 ns3 $NS3_STATS
+
+
 # superficial test for major performance bugs
 QPERF=`sh qperf.sh`
 if test -n "$QPERF"; then
@@ -464,8 +485,6 @@
 fi
 
 
-ckstats $ns3 ns3 55
-
 # restart the main test RPZ server to see if that creates a core file
 if test -z "$HAVE_CORE"; then
     $PERL $SYSTEMTESTTOP/stop.pl . ns3
diff -r -u bin/tests/system/rrl/clean.sh-orig bin/tests/system/rrl/clean.sh
--- bin/tests/system/rrl/clean.sh-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rrl/clean.sh	2004-01-01 00:00:00.000000000 +0000
@@ -0,0 +1,21 @@
+# Copyright (C) 2012, 2013  Internet Systems Consortium, Inc. ("ISC")
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+# REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+# AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+# INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+# LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+# OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+# PERFORMANCE OF THIS SOFTWARE.
+
+
+
+# Clean up after rrl tests.
+
+rm -f dig.out*
+rm -f  */named.memstats */named.run */named.stats */log-* */session.key
+rm -f ns3/bl*.db */*.jnl */*.core */*.pid
diff -r -u bin/tests/system/rrl/ns1/named.conf-orig bin/tests/system/rrl/ns1/named.conf
--- bin/tests/system/rrl/ns1/named.conf-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rrl/ns1/named.conf	2004-01-01 00:00:00.000000000 +0000
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2012, 2013  Internet Systems Consortium, Inc. ("ISC")
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+ * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+
+controls { /* empty */ };
+
+options {
+	query-source address 10.53.0.1;
+	notify-source 10.53.0.1;
+	transfer-source 10.53.0.1;
+	port 5300;
+	session-keyfile "session.key";
+	pid-file "named.pid";
+	listen-on { 10.53.0.1; };
+	listen-on-v6 { none; };
+	notify no;
+};
+
+zone "." {type master; file "root.db";};
diff -r -u bin/tests/system/rrl/ns1/root.db-orig bin/tests/system/rrl/ns1/root.db
--- bin/tests/system/rrl/ns1/root.db-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rrl/ns1/root.db	2004-01-01 00:00:00.000000000 +0000
@@ -0,0 +1,31 @@
+; Copyright (C) 2012, 2013  Internet Systems Consortium, Inc. ("ISC")
+;
+; Permission to use, copy, modify, and/or distribute this software for any
+; purpose with or without fee is hereby granted, provided that the above
+; copyright notice and this permission notice appear in all copies.
+;
+; THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+; REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+; AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+; INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+; LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+; OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+; PERFORMANCE OF THIS SOFTWARE.
+
+
+$TTL	120
+@		SOA	ns. hostmaster.ns. ( 1 3600 1200 604800 60 )
+@		NS	ns.
+ns.		A	10.53.0.1
+.		A	10.53.0.1
+
+; limit responses from here
+tld2.		NS	ns.tld2.
+ns.tld2.	A	10.53.0.2
+
+; limit recursion to here
+tld3.		NS	ns.tld3.
+ns.tld3.	A	10.53.0.3
+
+; generate SERVFAIL
+tld4.		NS	ns.tld3.
diff -r -u bin/tests/system/rrl/ns2/hints-orig bin/tests/system/rrl/ns2/hints
--- bin/tests/system/rrl/ns2/hints-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rrl/ns2/hints	2004-01-01 00:00:00.000000000 +0000
@@ -0,0 +1,18 @@
+; Copyright (C) 2012, 2013  Internet Systems Consortium, Inc. ("ISC")
+;
+; Permission to use, copy, modify, and/or distribute this software for any
+; purpose with or without fee is hereby granted, provided that the above
+; copyright notice and this permission notice appear in all copies.
+;
+; THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+; REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+; AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+; INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+; LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+; OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+; PERFORMANCE OF THIS SOFTWARE.
+
+
+
+.	0	NS	ns1.
+ns1.	0	A	10.53.0.1
diff -r -u bin/tests/system/rrl/ns2/named.conf-orig bin/tests/system/rrl/ns2/named.conf
--- bin/tests/system/rrl/ns2/named.conf-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rrl/ns2/named.conf	2004-01-01 00:00:00.000000000 +0000
@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2012, 2013  Internet Systems Consortium, Inc. ("ISC")
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+ * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+
+controls { /* empty */ };
+
+options {
+	query-source address 10.53.0.2;
+	notify-source 10.53.0.2;
+	transfer-source 10.53.0.2;
+	port 5300;
+	session-keyfile "session.key";
+	pid-file "named.pid";
+	statistics-file	"named.stats";
+	listen-on { 10.53.0.2; };
+	listen-on-v6 { none; };
+	notify no;
+
+	rate-limit {
+	    responses-per-second 2;
+	    all-per-second 50;
+	    slip 3;
+	    exempt-clients { 10.53.0.7; };
+
+	    // small enough to force a table expansion
+	    min-table-size 75;
+	};
+
+	additional-from-cache no;
+};
+
+key rndc_key {
+	secret "1234abcd8765";
+	algorithm hmac-sha256;
+};
+controls {
+	inet 10.53.0.2 port 9953 allow { any; } keys { rndc_key; };
+};
+
+/*
+ * These log settings have no effect unless "-g" is removed from ../../start.pl
+ */
+logging {
+	channel debug {
+	    file "log-debug";
+	    print-category yes; print-severity yes; severity debug 10;
+	};
+	channel queries {
+	    file "log-queries";
+	    print-category yes; print-severity yes; severity info;
+	};
+	category rate-limit { debug; queries; };
+	category queries { debug; queries; };
+};
+
+zone "." { type hint; file "hints"; };
+
+zone "tld2."{ type master; file "tld2.db"; };
diff -r -u bin/tests/system/rrl/ns2/tld2.db-orig bin/tests/system/rrl/ns2/tld2.db
--- bin/tests/system/rrl/ns2/tld2.db-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rrl/ns2/tld2.db	2004-01-01 00:00:00.000000000 +0000
@@ -0,0 +1,47 @@
+; Copyright (C) 2012, 2013  Internet Systems Consortium, Inc. ("ISC")
+;
+; Permission to use, copy, modify, and/or distribute this software for any
+; purpose with or without fee is hereby granted, provided that the above
+; copyright notice and this permission notice appear in all copies.
+;
+; THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+; REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+; AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+; INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+; LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+; OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+; PERFORMANCE OF THIS SOFTWARE.
+
+
+
+; rate limit response from this zone
+
+$TTL	120
+@		SOA	tld2.  hostmaster.ns.tld2. ( 1 3600 1200 604800 60 )
+		NS	ns
+		NS	.
+ns		A	10.53.0.2
+
+; basic rate limiting
+a1		A	192.0.2.1
+
+; wildcards
+*.a2		A	192.0.2.2
+
+; a3 is in tld3
+
+; a4 does not exist to give NXDOMAIN
+
+; a5 for TCP requests
+a5		A	192.0.2.5
+
+; a6 for whitelisted clients
+a6		A	192.0.2.6
+
+; a7 for SERVFAIL
+
+; a8 for NODATA
+a8		A	192.0.2.8
+
+; a9 for all-per-second limit
+$GENERATE 101-180 all$.a9 A 192.0.2.8
diff -r -u bin/tests/system/rrl/ns3/hints-orig bin/tests/system/rrl/ns3/hints
--- bin/tests/system/rrl/ns3/hints-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rrl/ns3/hints	2004-01-01 00:00:00.000000000 +0000
@@ -0,0 +1,18 @@
+; Copyright (C) 2012, 2013  Internet Systems Consortium, Inc. ("ISC")
+;
+; Permission to use, copy, modify, and/or distribute this software for any
+; purpose with or without fee is hereby granted, provided that the above
+; copyright notice and this permission notice appear in all copies.
+;
+; THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+; REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+; AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+; INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+; LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+; OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+; PERFORMANCE OF THIS SOFTWARE.
+
+
+
+.	0	NS	ns1.
+ns1.	0	A	10.53.0.1
diff -r -u bin/tests/system/rrl/ns3/named.conf-orig bin/tests/system/rrl/ns3/named.conf
--- bin/tests/system/rrl/ns3/named.conf-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rrl/ns3/named.conf	2004-01-01 00:00:00.000000000 +0000
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2012, 2013  Internet Systems Consortium, Inc. ("ISC")
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+ * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+
+controls { /* empty */ };
+
+options {
+	query-source address 10.53.0.3;
+	notify-source 10.53.0.3;
+	transfer-source 10.53.0.3;
+	port 5300;
+	session-keyfile "session.key";
+	pid-file "named.pid";
+	listen-on { 10.53.0.3; };
+	listen-on-v6 { none; };
+	notify no;
+
+	// check that all of the options are parsed without limiting anything
+	rate-limit {
+	    responses-per-second 200;
+	    referrals-per-second 220;
+	    nodata-per-second 230;
+	    nxdomains-per-second 240;
+	    errors-per-second 250;
+	    all-per-second 700;
+	    ipv4-prefix-length 24;
+	    ipv6-prefix-length 64;
+	    qps-scale 10;
+	    window 1;
+	    max-table-size 1000;
+	};
+
+};
+
+zone "." { type hint; file "hints"; };
+
+zone "tld3."{ type master; file "tld3.db"; };
diff -r -u bin/tests/system/rrl/ns3/tld3.db-orig bin/tests/system/rrl/ns3/tld3.db
--- bin/tests/system/rrl/ns3/tld3.db-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rrl/ns3/tld3.db	2004-01-01 00:00:00.000000000 +0000
@@ -0,0 +1,25 @@
+; Copyright (C) 2012, 2013  Internet Systems Consortium, Inc. ("ISC")
+;
+; Permission to use, copy, modify, and/or distribute this software for any
+; purpose with or without fee is hereby granted, provided that the above
+; copyright notice and this permission notice appear in all copies.
+;
+; THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+; REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+; AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+; INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+; LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+; OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+; PERFORMANCE OF THIS SOFTWARE.
+
+
+
+; rate limit response from this zone
+
+$TTL	120
+@		SOA	tld3.  hostmaster.ns.tld3. ( 1 3600 1200 604800 60 )
+		NS	ns
+		NS	.
+ns		A	10.53.0.3
+
+*.a3		A	192.0.3.3
diff -r -u bin/tests/system/rrl/setup.sh-orig bin/tests/system/rrl/setup.sh
--- bin/tests/system/rrl/setup.sh-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rrl/setup.sh	2004-01-01 00:00:00.000000000 +0000
@@ -0,0 +1,21 @@
+#!/bin/sh
+#
+# Copyright (C) 2012, 2013  Internet Systems Consortium, Inc. ("ISC")
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+# REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+# AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+# INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+# LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+# OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+# PERFORMANCE OF THIS SOFTWARE.
+
+
+SYSTEMTESTTOP=..
+. $SYSTEMTESTTOP/conf.sh
+. ./clean.sh
+
diff -r -u bin/tests/system/rrl/tests.sh-orig bin/tests/system/rrl/tests.sh
--- bin/tests/system/rrl/tests.sh-orig	2004-01-01 00:00:00.000000000 +0000
+++ bin/tests/system/rrl/tests.sh	2004-01-01 00:00:00.000000000 +0000
@@ -0,0 +1,258 @@
+# Copyright (C) 2012, 2013  Internet Systems Consortium, Inc. ("ISC")
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+# REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+# AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+# INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+# LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+# OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+# PERFORMANCE OF THIS SOFTWARE.
+
+
+# test response rate limiting
+
+SYSTEMTESTTOP=..
+. $SYSTEMTESTTOP/conf.sh
+
+#set -x
+
+ns1=10.53.0.1			    # root, defining the others
+ns2=10.53.0.2			    # test server
+ns3=10.53.0.3			    # secondary test server
+ns7=10.53.0.7			    # whitelisted client
+
+USAGE="$0: [-x]"
+while getopts "x" c; do
+    case $c in
+	x) set -x;;
+	*) echo "$USAGE" 1>&2; exit 1;;
+    esac
+done
+shift `expr $OPTIND - 1 || true`
+if test "$#" -ne 0; then
+    echo "$USAGE" 1>&2
+    exit 1
+fi
+# really quit on control-C
+trap 'exit 1' 1 2 15
+
+
+ret=0
+setret () {
+    ret=1
+    echo "$*"
+}
+
+
+# Wait until soon after the start of a second to make results consistent.
+#   The start of a second credits a rate limit.
+#   This would be far easier in C or by assuming a modern version of perl.
+sec_start () {
+    START=`date`
+    while true; do
+	NOW=`date`
+	if test "$START" != "$NOW"; then
+	    return
+	fi
+	$PERL -e 'select(undef, undef, undef, 0.05)' || true
+    done
+}
+
+
+# turn off ${HOME}/.digrc
+HOME=/dev/null; export HOME
+
+#   $1=result name  $2=domain name  $3=dig options
+digcmd () {
+    OFILE=$1; shift
+    DIG_DOM=$1; shift
+    ARGS="+nosearch +time=1 +tries=1 +ignore -p 5300 $* $DIG_DOM @$ns2"
+    #echo I:dig $ARGS 1>&2
+    START=`date +%y%m%d%H%M.%S`
+    RESULT=`$DIG $ARGS 2>&1 | tee $OFILE=TEMP				\
+	    | sed -n -e '/^;; AUTHORITY/,/^$/d'				\
+		-e '/^;; ADDITIONAL/,/^$/d'				\
+		-e  's/^[^;].*	\([^	 ]\{1,\}\)$/\1/p'		\
+		-e 's/;; flags.* tc .*/TC/p'				\
+		-e 's/;; .* status: NXDOMAIN.*/NXDOMAIN/p'		\
+		-e 's/;; .* status: SERVFAIL.*/SERVFAIL/p'		\
+		-e 's/;; connection timed out.*/drop/p'			\
+		-e 's/;; communications error to.*/drop/p'		\
+	    | tr -d '\n'`
+    mv "$OFILE=TEMP" "$OFILE=$RESULT"
+    touch -t $START "$OFILE=$RESULT"
+}
+
+
+#   $1=number of tests  $2=target domain  $3=dig options
+QNUM=1
+burst () {
+    BURST_LIMIT=$1; shift
+    BURST_DOM_BASE="$1"; shift
+    while test "$BURST_LIMIT" -ge 1; do
+	CNT=`expr "00$QNUM" : '.*\(...\)'`
+	eval BURST_DOM="$BURST_DOM_BASE"
+	FILE="dig.out-$BURST_DOM-$CNT"
+	digcmd $FILE $BURST_DOM $* &
+	QNUM=`expr $QNUM + 1`
+	BURST_LIMIT=`expr "$BURST_LIMIT" - 1`
+    done
+}
+
+
+#   $1=domain  $2=IP address  $3=# of IP addresses  $4=TC  $5=drop
+#	$6=NXDOMAIN  $7=SERVFAIL or other errors
+ck_result() {
+    BAD=
+    wait
+    ADDRS=`ls dig.out-$1-*=$2				2>/dev/null | wc -l`
+    # count simple truncated and truncated NXDOMAIN as TC
+    TC=`ls dig.out-$1-*=TC dig.out-$1-*=NXDOMAINTC	2>/dev/null | wc -l`
+    DROP=`ls dig.out-$1-*=drop				2>/dev/null | wc -l`
+    # count NXDOMAIN and truncated NXDOMAIN as NXDOMAIN
+    NXDOMAIN=`ls dig.out-$1-*=NXDOMAIN  dig.out-$1-*=NXDOMAINTC	2>/dev/null \
+							| wc -l`
+    SERVFAIL=`ls dig.out-$1-*=SERVFAIL			2>/dev/null | wc -l`
+    if test $ADDRS -ne "$3"; then
+	setret "I:"$ADDRS" instead of $3 '$2' responses for $1"
+	BAD=yes
+    fi
+    if test $TC -ne "$4"; then
+	setret "I:"$TC" instead of $4 truncation responses for $1"
+	BAD=yes
+    fi
+    if test $DROP -ne "$5"; then
+	setret "I:"$DROP" instead of $5 dropped responses for $1"
+	BAD=yes
+    fi
+    if test $NXDOMAIN -ne "$6"; then
+	setret "I:"$NXDOMAIN" instead of $6 NXDOMAIN responses for $1"
+	BAD=yes
+    fi
+    if test $SERVFAIL -ne "$7"; then
+	setret "I:"$SERVFAIL" instead of $7 error responses for $1"
+	BAD=yes
+    fi
+    if test -z "$BAD"; then
+	rm -f dig.out-$1-*
+    fi
+}
+
+
+ckstats () {
+    LABEL="$1"; shift
+    TYPE="$1"; shift
+    EXPECTED="$1"; shift
+    C=`sed -n -e "s/[	 ]*\([0-9]*\).responses $TYPE for rate limits.*/\1/p"  \
+	    ns2/named.stats | tail -1`
+    C=`expr 0$C + 0`
+    if test "$C" -ne $EXPECTED; then
+	setret "I:wrong $LABEL $TYPE statistics of $C instead of $EXPECTED"
+    fi
+}
+
+
+#########
+sec_start
+
+# Tests of referrals to "." must be done before the hints are loaded
+#   or with "additional-from-cache no"
+burst 5 a1.tld3 +norec
+# basic rate limiting
+burst 3 a1.tld2
+# 1 second delay allows an additional response.
+sleep 1
+burst 10 a1.tld2
+# Request 30 different qnames to try a wildcard.
+burst 30 'x$CNT.a2.tld2'
+# These should be counted and limited but are not.  See RT33138.
+burst 10 'y.x$CNT.a2.tld2'
+
+#					IP      TC      drop  NXDOMAIN SERVFAIL
+# referrals to "."
+ck_result   a1.tld3	''		2	1	2	0	0
+# check 13 results including 1 second delay that allows an additional response
+ck_result   a1.tld2	192.0.2.1	3	4	6	0	0
+
+# Check the wild card answers.
+# The parent name of the 30 requests is counted.
+ck_result 'x*.a2.tld2'	192.0.2.2	2	10	18	0	0
+
+# These should be limited but are not.  See RT33138.
+ck_result 'y.x*.a2.tld2' 192.0.2.2	10	0	0	0	0
+
+#########
+sec_start
+
+burst 10 'x.a3.tld3'
+burst 10 'y$CNT.a3.tld3'
+burst 10 'z$CNT.a4.tld2'
+
+# 10 identical recursive responses are limited
+ck_result 'x.a3.tld3'	192.0.3.3	2	3	5	0	0
+
+# 10 different recursive responses are not limited
+ck_result 'y*.a3.tld3'	192.0.3.3	10	0	0	0	0
+
+# 10 different NXDOMAIN responses are limited based on the parent name.
+#   We count 13 responses because we count truncated NXDOMAIN responses
+#   as both truncated and NXDOMAIN.
+ck_result 'z*.a4.tld2'	x		0	3	5	5	0
+
+$RNDC -c $SYSTEMTESTTOP/common/rndc.conf -p 9953 -s $ns2 stats
+ckstats first dropped 36
+ckstats first truncated 21
+
+
+#########
+sec_start
+
+burst 10 a5.tld2 +tcp
+burst 10 a6.tld2 -b $ns7
+burst 10 a7.tld4
+burst 2 a8.tld2 AAAA
+burst 2 a8.tld2 TXT
+burst 2 a8.tld2 SPF
+
+#					IP      TC      drop  NXDOMAIN SERVFAIL
+# TCP responses are not rate limited
+ck_result a5.tld2	192.0.2.5	10	0	0	0	0
+
+# whitelisted client is not rate limited
+ck_result a6.tld2	192.0.2.6	10	0	0	0	0
+
+# Errors such as SERVFAIL are rate limited.
+ck_result a7.tld4	x		0	0	8	0	2
+
+# NODATA responses are counted as the same regardless of qtype.
+ck_result a8.tld2	''		2	2	2	0	0
+
+$RNDC -c $SYSTEMTESTTOP/common/rndc.conf -p 9953 -s $ns2 stats
+ckstats second dropped 46
+ckstats second truncated 23
+
+
+#########
+sec_start
+
+#					IP      TC      drop  NXDOMAIN SERVFAIL
+# all-per-second
+#   The qnames are all unique but the client IP address is constant.
+QNUM=101
+burst 60 'all$CNT.a9.tld2'
+
+ck_result 'a*.a9.tld2'	192.0.2.8	50	0	10	0	0
+
+$RNDC -c $SYSTEMTESTTOP/common/rndc.conf -p 9953 -s $ns2 stats
+ckstats final dropped 56
+ckstats final truncated 23
+
+
+echo "I:exit status: $ret"
+# exit $ret
+[ $ret -ne 0 ] && echo "I:test failure overridden"
+exit 0
diff -r -u clean.sh-orig clean.sh
--- clean.sh-orig	2004-01-01 00:00:00.000000000 +0000
+++ clean.sh	2004-01-01 00:00:00.000000000 +0000
@@ -0,0 +1,21 @@
+# Copyright (C) 2012, 2013  Internet Systems Consortium, Inc. ("ISC")
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+# REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+# AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+# INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+# LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+# OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+# PERFORMANCE OF THIS SOFTWARE.
+
+
+
+# Clean up after rrl tests.
+
+rm -f dig.out*
+rm -f  */named.memstats */named.run */named.stats */log-* */session.key
+rm -f ns3/bl*.db */*.jnl */*.core */*.pid
diff -r -u doc/arm/Bv9ARM-book.xml-orig doc/arm/Bv9ARM-book.xml
--- doc/arm/Bv9ARM-book.xml-orig	2004-01-01 00:00:00.000000000 +0000
+++ doc/arm/Bv9ARM-book.xml	2004-01-01 00:00:00.000000000 +0000
@@ -4818,6 +4818,32 @@
 		    </para>
 		  </entry>
 		</row>
+                <row rowsep="0">
+                  <entry colname="1">
+                    <para><command>rate-limit</command></para>
+                  </entry>
+		  <entry colname="2">
+		    <para>
+		      The start, periodic, and final notices of the
+		      rate limiting of a stream of responses are logged at
+		      <command>info</command> severity in this category.
+		      These messages include a hash value of the domain name
+		      of the response and the name itself,
+		      except when there is insufficient memory to record
+		      the name for the final notice
+		      The final notice is normally delayed until about one
+		      minute after rate limit stops.
+		      A lack of memory can hurry the final notice,
+		      in which case it starts with an asterisk (*).
+		      Various internal events are logged at debug 1 level
+		      and higher.
+		    </para>
+		    <para>
+		      Rate limiting of individual requests
+		      is logged in the <command>query-errors</command> category.
+		    </para>
+		  </entry>
+		</row>
 	      </tbody>
 	    </tgroup>
 	  </informaltable>
@@ -5318,7 +5344,7 @@
     <optional> match-mapped-addresses <replaceable>yes_or_no</replaceable>; </optional>
     <optional> filter-aaaa-on-v4 ( <replaceable>yes_or_no</replaceable> | <replaceable>break-dnssec</replaceable> ); </optional>
     <optional> filter-aaaa { <replaceable>address_match_list</replaceable> }; </optional>
-    <optional> dns64 <replaceable>IPv6-prefix</replaceable> {
+    <optional> dns64 <replaceable>ipv6-prefix</replaceable> {
 	<optional> clients { <replaceable>address_match_list</replaceable> }; </optional>
 	<optional> mapped { <replaceable>address_match_list</replaceable> }; </optional>
         <optional> exclude { <replaceable>address_match_list</replaceable> }; </optional>
@@ -5351,8 +5377,25 @@
     <optional> resolver-query-timeout <replaceable>number</replaceable> ; </optional>
     <optional> deny-answer-addresses { <replaceable>address_match_list</replaceable> } <optional> except-from { <replaceable>namelist</replaceable> } </optional>;</optional>
     <optional> deny-answer-aliases { <replaceable>namelist</replaceable> } <optional> except-from { <replaceable>namelist</replaceable> } </optional>;</optional>
+    <optional> rate-limit {
+	<optional> responses-per-second <replaceable>number</replaceable> ; </optional>
+	<optional> referrals-per-second <replaceable>number</replaceable> ; </optional>
+	<optional> nodata-per-second <replaceable>number</replaceable> ; </optional>
+	<optional> nxdomains-per-second <replaceable>number</replaceable> ; </optional>
+	<optional> errors-per-second <replaceable>number</replaceable> ; </optional>
+	<optional> all-per-second <replaceable>number</replaceable> ; </optional>
+	<optional> window <replaceable>number</replaceable> ; </optional>
+	<optional> log-only <replaceable>yes_or_no</replaceable> ; </optional>
+	<optional> qps-scale <replaceable>number</replaceable> ; </optional>
+	<optional> ipv4-prefix-length <replaceable>number</replaceable> ; </optional>
+	<optional> ipv6-prefix-length <replaceable>number</replaceable> ; </optional>
+	<optional> slip <replaceable>number</replaceable> ; </optional>
+	<optional> exempt-clients  { <replaceable>address_match_list</replaceable> } ; </optional>
+	<optional> max-table-size <replaceable>number</replaceable> ; </optional>
+	<optional> min-table-size <replaceable>number</replaceable> ; </optional>
+      } ; </optional>
     <optional> response-policy { <replaceable>zone_name</replaceable>
-	<optional> policy given | disabled | passthru | nxdomain | nodata | cname <replaceable>domain</replaceable> </optional>
+	<optional> policy given | disabled | passthru | drop | nxdomain | nodata | cname <replaceable>domain</replaceable> </optional>
 	<optional> recursive-only <replaceable>yes_or_no</replaceable> </optional> <optional> max-policy-ttl <replaceable>number</replaceable> </optional> ;
     } <optional> recursive-only <replaceable>yes_or_no</replaceable> </optional> <optional> max-policy-ttl <replaceable>number</replaceable> </optional>
 	<optional> break-dnssec <replaceable>yes_or_no</replaceable> </optional> <optional> min-ns-dots <replaceable>number</replaceable> </optional> ; </optional>
@@ -9645,30 +9688,25 @@
 	    Response policy zones are named in the
 	    <command>response-policy</command> option for the view or among the
 	    global options if there is no response-policy option for the view.
-	    RPZs are ordinary DNS zones containing RRsets
+	    Response policy zones are ordinary DNS zones containing RRsets
 	    that can be queried normally if allowed.
 	    It is usually best to restrict those queries with something like
 	    <command>allow-query { localhost; };</command>.
 	  </para>
 
 	  <para>
-	    Four policy triggers are encoded in RPZ records, QNAME, IP, NSIP,
-	    and NSDNAME.
-	    QNAME RPZ records triggered by query names of requests and targets
-	    of CNAME records resolved to generate the response.
-	    The owner name of a QNAME RPZ record is the query name relativized
-	    to the RPZ.
-	  </para>
-
-	  <para>
-	    The second kind of RPZ trigger is an IP address in an A and AAAA
-	    record in the ANSWER section of a response.
-	    IP address triggers are encoded in records that have owner names
-	    that are subdomains of <userinput>rpz-ip</userinput> relativized
-	    to the RPZ origin name and encode an IP address or address block.
-	    IPv4 trigger addresses are represented as
+	    Five policy triggers can be encoded in RPZ records, CLIENT-IP,
+	    QNAME, IP, NSDNAME, and NSIP.
+	    CLIENT-IP records are triggered by the IP address of the
+	    DNS client.
+	    Client IP address triggers are encoded in records that have
+	    owner names that are subdomains of
+	    <userinput>rpz-client-ip</userinput> relativized to the
+	    policy zone origin name
+	    and encode an address or address block.
+	    IPv4 addresses are represented as
 	    <userinput>prefixlength.B4.B3.B2.B1.rpz-ip</userinput>.
-	    The prefix length must be between 1 and 32.
+	    The IPv4 prefix length must be between 1 and 32.
 	    All four bytes, B4, B3, B2, and B1, must be present.
 	    B4 is the decimal value of the least significant byte of the
 	    IPv4 address as in IN-ADDR.ARPA.
@@ -9678,10 +9716,25 @@
 	    Each of W8,...,W1 is a one to four digit hexadecimal number
 	    representing 16 bits of the IPv6 address as in the standard text
 	    representation of IPv6 addresses, but reversed as in IN-ADDR.ARPA.
-	    All 8 words must be present except when consecutive
-	    zero words are replaced with <userinput>.zz.</userinput>
+	    All 8 words must be present except when one set of consecutive
+	    zero words is replaced with <userinput>.zz.</userinput>
 	    analogous to double colons (::) in standard IPv6 text encodings.
-	    The prefix length must be between 1 and 128.
+	    The IPv6 prefix length must be between 64 and 128.
+	  </para>
+
+	  <para>
+	    QNAME policy records are triggered by query names of requests and
+	    targets of CNAME records resolved to generate the response.
+	    The owner name of a QNAME policy record is
+	    the query name relativized to the policy zone.
+	  </para>
+
+	  <para>
+	    The third kind of trigger is an IP address in an A and AAAA
+	    record in the ANSWER section of a response.
+	    IP address triggers
+	    IP triggers are encoded like client-IP triggers except as
+	    subdomains of <userinput>rpz-ip</userinput>.
 	  </para>
 
 	  <para>
@@ -9703,7 +9756,7 @@
 	  </para>
 
 	  <para>
-	    The query response is checked against all RPZs, so
+	    The query response is checked against all response policy zones, so
 	    two or more policy records can be triggered by a response.
 	    Because DNS responses can be rewritten according to at most one
 	    policy record, a single record encoding an action (other than
@@ -9714,8 +9767,8 @@
 	      <listitem>Choose the triggered record in the zone that appears
 		first in the response-policy option.
 	      </listitem>
-	      <listitem>Prefer QNAME to IP to NSDNAME to NSIP triggers
-		in a single zone.
+	      <listitem>Prefer CLIENT-IP to QNAME to IP to NSDNAME to NSIP
+		triggers in a single zone.
 	      </listitem>
 	      <listitem>Among NSDNAME triggers, prefer the
 		trigger that matches the smallest name under the DNSSEC ordering.
@@ -9734,14 +9787,25 @@
 	    When the processing of a response is restarted to resolve
 	    DNAME or CNAME records and a policy record set has
 	    not been triggered,
-	    all RPZs are again consulted for the DNAME or CNAME names
-	    and addresses.
+	    all response policy zones are again consulted for the
+	    DNAME or CNAME names and addresses.
 	  </para>
 
 	  <para>
 	    RPZ record sets are sets of any types of DNS record except
 	    DNAME or DNSSEC that encode actions or responses to queries.
 	    <itemizedlist>
+	      <listitem>The <command>PASSTHRU</command> policy is specified
+		by a CNAME whose target is <command>rpz-passthru</command>.
+		It causes the response to not be rewritten
+		and is most often used to "poke holes" in policies for
+		CIDR blocks.
+	      </listitem>
+	      <listitem>The <command>DROP</command> policy is specified
+		by a CNAME whose target is <command>rpz-drop</command>.
+		It causes the response to discarded.
+		Nothing is sent to the DNS client.
+	      </listitem>
 	      <listitem>The <command>NXDOMAIN</command> response is encoded
 		by a CNAME whose target is the root domain (.)
 	      </listitem>
@@ -9761,23 +9825,16 @@
 		The purpose for this special form is query logging in the
 		walled garden's authority DNS server.
 	      </listitem>
-	      <listitem>The <command>PASSTHRU</command> policy is specified
-		by a CNAME whose target is <command>rpz-passthru.</command>
-		It causes the response to not be rewritten
-		and is most often used to "poke holes" in policies for
-		CIDR blocks.
-		(A CNAME whose target is the variable part of its owner name
-		is an obsolete specification of the PASSTHRU policy.)
-	      </listitem>
 	    </itemizedlist>
 	  </para>
 
 	  <para>
-	    The actions specified in an RPZ can be overridden with a
+	    The actions specified in a policy zone can be overridden with a
 	    <command>policy</command> clause in the
 	    <command>response-policy</command> option.
-	    An organization using an RPZ provided by another organization might
-	    use this mechanism to redirect domains to its own walled garden.
+	    An organization using a policy zone provided by another
+	    organization might use this mechanism to redirect domains
+	    to its own walled garden.
 	    <itemizedlist>
 	      <listitem><command>GIVEN</command> says "do not override but
 		perform the action specified in the zone."
@@ -9808,9 +9865,10 @@
 	  </para>
 
 	  <para>
-	    By default, the actions encoded in an RPZ are applied
-	    only to queries that ask for recursion (RD=1).
-	    That default can be changed for a single RPZ or all RPZs in a view
+	    By default, the actions encoded in a response policy zone
+	    are applied only to queries that ask for recursion (RD=1).
+	    That default can be changed for a single policy zone or
+	    all response policy zones in a view
 	    with a <command>recursive-only no</command> clause.
 	    This feature is useful for serving the same zone files
 	    both inside and outside an RFC 1918 cloud and using RPZ to
@@ -9819,15 +9877,37 @@
 	  </para>
 
 	  <para>
-	    Also by default, RPZ actions are applied only to DNS requests that
-	    either do not request DNSSEC metadata (DO=0) or when no DNSSEC
-	    records are available for request name in the original zone (not
-	    the response policy zone).
-	    This default can be changed for all RPZs in a view with a
-	    <command>break-dnssec yes</command> clause.
-	    In that case, RPZ actions are applied regardless of DNSSEC.
-	    The name of the clause option reflects the fact that results
-	    rewritten by RPZ actions cannot verify.
+            Also by default, RPZ actions are applied only to DNS requests
+            that either do not request DNSSEC metadata (DO=0) or when no
+            DNSSEC records are available for request name in the original
+            zone (not the response policy zone).  This default can be
+            changed for all response policy zones in a view with a
+            <command>break-dnssec yes</command> clause.  In that case, RPZ
+            actions are applied regardless of DNSSEC.  The name of the
+            clause option reflects the fact that results rewritten by RPZ
+            actions cannot verify.
+	  </para>
+
+	  <para>
+            No DNS records are needed to trigger a QNAME action.  The name
+            itself is sufficient, so in principle the query name need not
+            be recursively resolved.  However, not resolving the requested
+            name leaks the fact that response policy rewriting is in use
+            and that the name is listed in a policy zone to operators of
+            servers for listed names.  To prevent that information leak, by
+            default any recursion needed for a request is done before any
+            policy triggers are considered.  Because listed domains often
+            have slow authoritative servers, this default behavior can cost
+            significant time.  The <command>qname-wait-recurse no</command>
+            option overrides the default behavior when recursion cannot
+            change the response.  <command>qname-wait-recurse no</command>
+            does not affect QNAME triggers in policy zones listed after
+            other zones containing IP, NSIP and NSDNAME triggers, because
+            those may depend on the A, AAAA, and NS records that would be
+            found during recursive resolution.  It also does not affect
+            DNSSEC requests (DO=1) unless <command>break-dnssec yes</command>
+            is in use, because the response would depend on whether or not
+            RRSIG records were found during resolution.
 	  </para>
 
 	  <para>
@@ -9897,6 +9977,223 @@
             <command>RPZRewrites</command> statistics.
           </para>
         </sect3>
+
+	<sect3>
+	  <title>Response Rate Limiting</title>
+	  <para>
+	    Excessive almost-identical UDP <emphasis>responses</emphasis>
+	    can be controlled by configuring a
+	    <command>rate-limit</command> clause in an
+	    <command>options</command> or <command>view</command> statement.
+	    This mechanism keeps authoritative BIND 9 from being used
+	    in amplifying reflection denial of service (DoS) attacks.
+	    Short truncated (TC=1) responses can be sent to provide
+	    rate-limited responses to legitimate clients within
+	    a range of forged, attacked IP addresses.
+	    Legitimate clients react to dropped or truncated response
+	    by retrying with UDP or with TCP respectively.
+	  </para>
+
+	  <para>
+	    This mechanism is intended for authoritative DNS servers.
+	    It can be used on recursive servers but can slow
+	    applications such as SMTP servers (mail receivers) and
+	    HTTP clients (web browsers) that repeatedly request the
+	    same domains.
+	    When possible, closing "open" recursive servers is better.
+	  </para>
+
+	  <para>
+	    Response rate limiting uses a "credit" or "token bucket" scheme.
+	    Each combination of identical response and client
+	    has a conceptual account that earns a specified number
+	    of credits every second.
+	    A prospective response debits its account by one.
+	    Responses are dropped or truncated
+	    while the account is negative.
+            Responses are tracked within a rolling window of time
+            which defaults to 15 seconds, but can be configured with
+            the <command>window</command> option to any value from
+            1 to 3600 seconds (1 hour).
+	    The account cannot become more positive than
+	    the per-second limit
+	    or more negative than <command>window</command>
+	    times the per-second limit.
+            When the specified number of credits for a class of
+            responses is set to 0, those responses are not rate limited.
+	  </para>
+
+	  <para>
+	    The notions of "identical response" and "DNS client"
+	    for rate limiting are not simplistic.
+	    All responses to an address block are counted as if to a
+	    single client.
+	    The prefix lengths of addresses blocks are
+	    specified with <command>ipv4-prefix-length</command> (default 24)
+	    and <command>ipv6-prefix-length</command> (default 56).
+	  </para>
+
+	  <para>
+	    All non-empty responses for a valid domain name (qname)
+	    and record type (qtype) are identical and have a limit specified
+	    with <command>responses-per-second</command>
+	    (default 0 or no limit).
+	    All empty (NODATA) responses for a valid domain,
+	    regardless of query type, are identical.
+	    Responses in the NODATA class are limited by
+	    <command>nodata-per-second</command>
+	    (default <command>responses-per-second</command>).
+	    Requests for any and all undefined subdomains of a given
+            valid domain result in NXDOMAIN errors, and are identical
+            regardless of query type.
+	    They are limited by <command>nxdomain-per-second</command>
+	    (default <command>responses-per-second</command>).
+	    This controls some attacks using random names, but
+	    can be relaxed or turned off (set to 0)
+	    on servers that expect many legitimate
+	    NXDOMAIN responses, such as from anti-spam blacklists.
+	    Referrals or delegations to the server of a given
+	    domain are identical and are limited by
+	    <command>referrals-per-second</command>
+	    (default <command>responses-per-second</command>).
+	  </para>
+
+	  <para>
+	    Responses generated from local wildcards are counted and limited
+	    as if they were for the parent domain name.
+	    This controls flooding using random.wild.example.com.
+	  </para>
+
+	  <para>
+            All requests that result in DNS errors other
+	    than NXDOMAIN, such as SERVFAIL and FORMERR, are identical
+            regardless of requested name (qname) or record type (qtype).
+	    This controls attacks using invalid requests or distant,
+	    broken authoritative servers.
+	    By default the limit on errors is the same as the
+	    <command>responses-per-second</command> value,
+	    but it can be set separately with
+	    <command>errors-per-second</command>.
+	  </para>
+
+	  <para>
+	    Many attacks using DNS involve UDP requests with forged source
+	    addresses.
+	    Rate limiting prevents the use of BIND 9 to flood a network
+	    with responses to requests with forged source addresses,
+	    but could let a third party block responses to legitimate requests.
+	    There is a mechanism that can answer some legitimate
+	    requests from a client whose address is being forged in a flood.
+	    Setting <command>slip</command> to 2 (its default) causes every
+	    other UDP request to be answered with a small truncated (TC=1)
+	    response.
+	    The small size and reduced frequency, and so lack of
+	    amplification, of "slipped" responses make them unattractive
+	    for reflection DoS attacks.
+	    <command>slip</command> must be between 0 and 10.
+	    A value of 0 does not "slip";
+	    no truncated responses are sent due to rate limiting.
+	    Some error responses including REFUSED and SERVFAIL
+	    cannot be replaced with truncated responses and are instead
+	    leaked at the <command>slip</command> rate.
+	  </para>
+
+	  <para>
+	    When the approximate query per second rate exceeds
+	    the <command>qps-scale</command> value,
+	    then the <command>responses-per-second</command>,
+	    <command>errors-per-second</command>,
+	    <command>nxdomains-per-second</command> and
+	    <command>all-per-second</command> values are reduced by the
+	    ratio of the current rate to the <command>qps-scale</command> value.
+	    This feature can tighten defenses during attacks.
+	    For example, with
+	    <command>qps-scale 250; responses-per-second 20;</command> and
+	    a total query rate of 1000 queries/second for all queries from
+	    all DNS clients including via TCP,
+	    then the effective responses/second limit changes to
+	    (250/1000)*20 or 5.
+	    Responses sent via TCP are not limited
+	    but are counted to compute the query per second rate.
+	  </para>
+
+	  <para>
+	    Communities of DNS clients can be given their own parameters or no
+	    rate limiting by putting
+	    <command>rate-limit</command> statements in <command>view</command>
+	    statements instead of the global <command>option</command>
+	    statement.
+	    A <command>rate-limit</command> statement in a view replaces,
+	    rather than supplementing, a <command>rate-limit</command>
+	    statement among the main options.
+	    DNS clients within a view can be exempted from rate limits
+	    with the <command>exempt-clients</command> clause.
+	  </para>
+
+	  <para>
+	    UDP responses of all kinds can be limited with the
+	    <command>all-per-second</command> phrase.
+	    This rate limiting is unlike the rate limiting provided by
+	    <command>responses-per-second</command>,
+	    <command>errors-per-second</command>, and
+	    <command>nxdomains-per-second</command> on a DNS server
+	    which are often invisible to the victim of a DNS reflection attack.
+	    Unless the forged requests of the attack are the same as the
+	    legitimate requests of the victim, the victim's requests are
+	    not affected.
+	    Responses affected by an <command>all-per-second</command> limit
+	    are always dropped; the <command>slip</command> value has no
+	    effect.
+	    An <command>all-per-second</command> limit should be
+	    at least 4 times as large as the other limits,
+	    because single DNS clients often send bursts of legitimate
+	    requests.
+	    For example, the receipt of a single mail message can prompt
+	    requests from an SMTP server for NS, PTR, A, and AAAA records
+	    as the incoming SMTP/TCP/IP connection is considered.
+	    The SMTP server can need additional NS, A, AAAA, MX, TXT, and SPF
+	    records as it considers the STMP <command>Mail From</command>
+	    command.
+	    Web browsers often repeatedly resolve the same names that
+	    are repeated in HTML &lt;IMG&gt; tags in a page.
+	    <command>All-per-second</command> is similar to the
+	    rate limiting offered by firewalls but often inferior.
+	    Attacks that justify ignoring the
+	    contents of DNS responses are likely to be attacks on the
+	    DNS server itself.
+	    They usually should be discarded before the DNS server
+	    spends resources make TCP connections or parsing DNS requesets,
+	    but that rate limiting must be done before the
+	    DNS server sees the requests.
+	  </para>
+
+	  <para>
+	    The maximum size of the table used to track requests and
+	    rate limit responses is set with <command>max-table-size</command>.
+	    Each entry in the table is between 40 and 80 bytes.
+	    The table needs approximately as many entries as the number
+	    of requests received per second.
+	    The default is 20,000.
+	    To reduce the cold start of growing the table,
+	    <command>min-table-size</command> (default 500)
+	    can set the minimum table size.
+	    Enable <command>rate-limit</command> category logging to monitor
+	    expansions of the table and inform
+	    choices for the initial and maximum table size.
+	  </para>
+
+	  <para>
+	    Use <command>log-only yes</command> to test rate limiting parameters
+	    without actually dropping any requests.
+	  </para>
+
+	  <para>
+	    Responses dropped by rate limits are included in the
+	    <command>RateDropped</command> and <command>QryDropped</command>
+	    statistics.
+	    Responses that truncated by rate limits are included in
+	    <command>RateSlipped</command> and <command>RespTruncated</command>.
+	</sect3>
       </sect2>
 
       <sect2 id="server_statement_grammar">
@@ -14649,6 +14946,32 @@
 		      </para>
 		    </entry>
 		  </row>
+		  <row rowsep="0">
+		    <entry colname="1">
+		      <para><command>RateDropped</command></para>
+		    </entry>
+		    <entry colname="2">
+		      <para><command></command></para>
+		    </entry>
+		    <entry colname="3">
+		      <para>
+			Responses dropped by rate limits.
+		      </para>
+		    </entry>
+		  </row>
+		  <row rowsep="0">
+		    <entry colname="1">
+		      <para><command>RateSlipped</command></para>
+		    </entry>
+		    <entry colname="2">
+		      <para><command></command></para>
+		    </entry>
+		    <entry colname="3">
+		      <para>
+			Responses truncated by rate limits.
+		      </para>
+		    </entry>
+		  </row>
 		</tbody>
               </tgroup>
             </informaltable>
diff -r -u hints-orig hints
--- hints-orig	2004-01-01 00:00:00.000000000 +0000
+++ hints	2004-01-01 00:00:00.000000000 +0000
@@ -0,0 +1,36 @@
+; Copyright (C) 2012, 2013  Internet Systems Consortium, Inc. ("ISC")
+;
+; Permission to use, copy, modify, and/or distribute this software for any
+; purpose with or without fee is hereby granted, provided that the above
+; copyright notice and this permission notice appear in all copies.
+;
+; THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+; REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+; AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+; INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+; LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+; OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+; PERFORMANCE OF THIS SOFTWARE.
+
+
+
+.	0	NS	ns1.
+ns1.	0	A	10.53.0.1
+; Copyright (C) 2012, 2013  Internet Systems Consortium, Inc. ("ISC")
+;
+; Permission to use, copy, modify, and/or distribute this software for any
+; purpose with or without fee is hereby granted, provided that the above
+; copyright notice and this permission notice appear in all copies.
+;
+; THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+; REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+; AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+; INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+; LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+; OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+; PERFORMANCE OF THIS SOFTWARE.
+
+
+
+.	0	NS	ns1.
+ns1.	0	A	10.53.0.1
diff -r -u lib/dns/Makefile.in-orig lib/dns/Makefile.in
--- lib/dns/Makefile.in-orig	2004-01-01 00:00:00.000000000 +0000
+++ lib/dns/Makefile.in	2004-01-01 00:00:00.000000000 +0000
@@ -67,8 +67,8 @@
 		portlist.@O@ private.@O@ \
 		rbt.@O@ rbtdb.@O@ rbtdb64.@O@ rcode.@O@ rdata.@O@ \
 		rdatalist.@O@ rdataset.@O@ rdatasetiter.@O@ rdataslab.@O@ \
-		request.@O@ resolver.@O@ result.@O@ rootns.@O@ rpz.@O@ \
-		rriterator.@O@ sdb.@O@ \
+		request.@O@ resolver.@O@ result.@O@ rootns.@O@ \
+		rpz.@O@ rrl.@O@ rriterator.@O@ sdb.@O@ \
 		sdlz.@O@ soa.@O@ ssu.@O@ ssu_external.@O@ \
 		stats.@O@ tcpmsg.@O@ time.@O@ timer.@O@ tkey.@O@ \
 		tsec.@O@ tsig.@O@ ttl.@O@ update.@O@ validator.@O@ \
@@ -95,7 +95,7 @@
 		name.c ncache.c nsec.c nsec3.c order.c peer.c portlist.c \
 		rbt.c rbtdb.c rbtdb64.c rcode.c rdata.c rdatalist.c \
 		rdataset.c rdatasetiter.c rdataslab.c request.c \
-		resolver.c result.c rootns.c rpz.c rriterator.c \
+		resolver.c result.c rootns.c rpz.c rrl.c rriterator.c \
 		sdb.c sdlz.c soa.c ssu.c ssu_external.c \
 		stats.c tcpmsg.c time.c timer.c tkey.c \
 		tsec.c tsig.c ttl.c update.c validator.c \
diff -r -u lib/dns/db.c-orig lib/dns/db.c
--- lib/dns/db.c-orig	2004-01-01 00:00:00.000000000 +0000
+++ lib/dns/db.c	2004-01-01 00:00:00.000000000 +0000
@@ -1007,21 +1007,23 @@
 		(db->methods->resigned)(db, rdataset, version);
 }
 
-isc_result_t
-dns_db_rpz_enabled(dns_db_t *db, dns_rpz_st_t *st)
-{
-	if (db->methods->rpz_enabled != NULL)
-		return ((db->methods->rpz_enabled)(db, st));
-	return (ISC_R_SUCCESS);
+/*
+ * Attach a database to policy zone databases.
+ * This should only happen when the caller has already ensured that
+ * it is dealing with a database that understands response policy zones.
+ */
+void
+dns_db_rpz_attach(dns_db_t *db, dns_rpz_zones_t *rpzs, dns_rpz_num_t rpz_num) {
+	REQUIRE(db->methods->rpz_attach != NULL);
+	(db->methods->rpz_attach)(db, rpzs, rpz_num);
 }
 
-void
-dns_db_rpz_findips(dns_rpz_zone_t *rpz, dns_rpz_type_t rpz_type,
-		   dns_zone_t *zone, dns_db_t *db, dns_dbversion_t *version,
-		   dns_rdataset_t *ardataset, dns_rpz_st_t *st,
-		   dns_name_t *query_qname)
-{
-	if (db->methods->rpz_findips != NULL)
-		(db->methods->rpz_findips)(rpz, rpz_type, zone, db, version,
-					   ardataset, st, query_qname);
+/*
+ * Finish loading a response policy zone.
+ */
+isc_result_t
+dns_db_rpz_ready(dns_db_t *db) {
+	if (db->methods->rpz_ready == NULL)
+		return (ISC_R_SUCCESS);
+	return ((db->methods->rpz_ready)(db));
 }
diff -r -u lib/dns/ecdb.c-orig lib/dns/ecdb.c
--- lib/dns/ecdb.c-orig	2004-01-01 00:00:00.000000000 +0000
+++ lib/dns/ecdb.c	2004-01-01 00:00:00.000000000 +0000
@@ -582,8 +582,8 @@
 	NULL,			/* resigned */
 	NULL,			/* isdnssec */
 	NULL,			/* getrrsetstats */
-	NULL,			/* rpz_enabled */
-	NULL,			/* rpz_findips */
+ 	NULL,			/* rpz_attach */
+ 	NULL,			/* rpz_ready */
 	NULL,			/* findnodeext */
 	NULL			/* findext */
 };
diff -r -u lib/dns/include/dns/db.h-orig lib/dns/include/dns/db.h
--- lib/dns/include/dns/db.h-orig	2004-01-01 00:00:00.000000000 +0000
+++ lib/dns/include/dns/db.h	2004-01-01 00:00:00.000000000 +0000
@@ -172,14 +172,9 @@
 					   dns_dbversion_t *version);
 	isc_boolean_t	(*isdnssec)(dns_db_t *db);
 	dns_stats_t	*(*getrrsetstats)(dns_db_t *db);
-	isc_result_t	(*rpz_enabled)(dns_db_t *db, dns_rpz_st_t *st);
-	void		(*rpz_findips)(dns_rpz_zone_t *rpz,
-				       dns_rpz_type_t rpz_type,
-				       dns_zone_t *zone, dns_db_t *db,
-				       dns_dbversion_t *version,
-				       dns_rdataset_t *ardataset,
-				       dns_rpz_st_t *st,
-				       dns_name_t *query_qname);
+	void		(*rpz_attach)(dns_db_t *db, dns_rpz_zones_t *rpzs,
+				      dns_rpz_num_t rpz_num);
+	isc_result_t	(*rpz_ready)(dns_db_t *db);
 	isc_result_t	(*findnodeext)(dns_db_t *db, dns_name_t *name,
 				     isc_boolean_t create,
 				     dns_clientinfomethods_t *methods,
@@ -1542,30 +1537,17 @@
  *	dns_rdatasetstats_create(); otherwise NULL.
  */
 
-isc_result_t
-dns_db_rpz_enabled(dns_db_t *db, dns_rpz_st_t *st);
+void
+dns_db_rpz_attach(dns_db_t *db, dns_rpz_zones_t *rpzs, dns_rpz_num_t rpz_num);
 /*%<
- * Mark a database for response policy rewriting
- * or find which RPZ data is available.
+ * Attach the response policy information for a view to a database for a
+ * zone for the view.
  */
 
-void
-dns_db_rpz_findips(dns_rpz_zone_t *rpz, dns_rpz_type_t rpz_type,
-		   dns_zone_t *zone, dns_db_t *db, dns_dbversion_t *version,
-		   dns_rdataset_t *ardataset, dns_rpz_st_t *st,
-		   dns_name_t *query_qname);
-/*%<
- * Search the CDIR block tree of a response policy tree of trees for the best
- * match to any of the IP addresses in an A or AAAA rdataset.
- *
- * Requires:
- * \li	search in policy zone 'rpz' for a match of 'rpz_type' either
- *	    DNS_RPZ_TYPE_IP or DNS_RPZ_TYPE_NSIP
- * \li	'zone' and 'db' are the database corresponding to 'rpz'
- * \li	'version' is the required version of the database
- * \li	'ardataset' is an A or AAAA rdataset of addresses to check
- * \li	'found' specifies the previous best match if any or
- *	    or NULL, an empty name, 0, DNS_RPZ_POLICY_MISS, and 0
+isc_result_t
+dns_db_rpz_ready(dns_db_t *db);
+/*%<
+ * Finish loading a response policy zone.
  */
 
 ISC_LANG_ENDDECLS
diff -r -u lib/dns/include/dns/log.h-orig lib/dns/include/dns/log.h
--- lib/dns/include/dns/log.h-orig	2004-01-01 00:00:00.000000000 +0000
+++ lib/dns/include/dns/log.h	2004-01-01 00:00:00.000000000 +0000
@@ -43,6 +43,7 @@
 #define DNS_LOGCATEGORY_DELEGATION_ONLY	(&dns_categories[10])
 #define DNS_LOGCATEGORY_EDNS_DISABLED	(&dns_categories[11])
 #define DNS_LOGCATEGORY_RPZ		(&dns_categories[12])
+#define DNS_LOGCATEGORY_RRL		(&dns_categories[13])
 
 /* Backwards compatibility. */
 #define DNS_LOGCATEGORY_GENERAL		ISC_LOGCATEGORY_GENERAL
diff -r -u lib/dns/include/dns/rpz.h-orig lib/dns/include/dns/rpz.h
--- lib/dns/include/dns/rpz.h-orig	2004-01-01 00:00:00.000000000 +0000
+++ lib/dns/include/dns/rpz.h	2004-01-01 00:00:00.000000000 +0000
@@ -14,7 +14,6 @@
  * PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id$ */
 
 
 #ifndef DNS_RPZ_H
@@ -25,19 +24,30 @@
 #include <dns/fixedname.h>
 #include <dns/rdata.h>
 #include <dns/types.h>
+#include <isc/refcount.h>
 
 ISC_LANG_BEGINDECLS
 
 #define DNS_RPZ_PREFIX		"rpz-"
+/*
+ * Sub-zones of various trigger types.
+ */
+#define DNS_RPZ_CLIENT_IP_ZONE	DNS_RPZ_PREFIX"client-ip"
 #define DNS_RPZ_IP_ZONE		DNS_RPZ_PREFIX"ip"
 #define DNS_RPZ_NSIP_ZONE	DNS_RPZ_PREFIX"nsip"
 #define DNS_RPZ_NSDNAME_ZONE	DNS_RPZ_PREFIX"nsdname"
-#define DNS_RPZ_PASSTHRU_ZONE	DNS_RPZ_PREFIX"passthru"
+/*
+ * Special policies.
+ */
+#define DNS_RPZ_PASSTHRU_NAME	DNS_RPZ_PREFIX"passthru"
+#define DNS_RPZ_DROP_NAME	DNS_RPZ_PREFIX"drop"
 
-typedef isc_uint8_t		dns_rpz_cidr_bits_t;
+
+typedef isc_uint8_t		dns_rpz_prefix_t;
 
 typedef enum {
 	DNS_RPZ_TYPE_BAD,
+	DNS_RPZ_TYPE_CLIENT_IP,
 	DNS_RPZ_TYPE_QNAME,
 	DNS_RPZ_TYPE_IP,
 	DNS_RPZ_TYPE_NSDNAME,
@@ -45,45 +55,148 @@
 } dns_rpz_type_t;
 
 /*
- * Require DNS_RPZ_POLICY_PASSTHRU < DNS_RPZ_POLICY_NXDOMAIN <
- * DNS_RPZ_POLICY_NODATA < DNS_RPZ_POLICY_CNAME to choose among competing
- * policies.
+ * Require DNS_RPZ_POLICY_PASSTHRU < DNS_RPZ_POLICY_DROP <
+ * DNS_RPZ_POLICY_NXDOMAIN < DNS_RPZ_POLICY_NODATA < DNS_RPZ_POLICY_CNAME
+ * to choose among competing policies.
  */
 typedef enum {
 	DNS_RPZ_POLICY_GIVEN = 0,	/* 'given': what policy record says */
-	DNS_RPZ_POLICY_DISABLED = 1,	/* 'cname x': answer with x's rrsets */
+	DNS_RPZ_POLICY_DISABLED = 1,	/* log what would have happened */
 	DNS_RPZ_POLICY_PASSTHRU = 2,	/* 'passthru': do not rewrite */
-	DNS_RPZ_POLICY_NXDOMAIN = 3,	/* 'nxdomain': answer with NXDOMAIN */
-	DNS_RPZ_POLICY_NODATA = 4,	/* 'nodata': answer with ANCOUNT=0 */
-	DNS_RPZ_POLICY_CNAME = 5,	/* 'cname x': answer with x's rrsets */
+	DNS_RPZ_POLICY_DROP = 3,	/* 'drop': do not respond */
+	DNS_RPZ_POLICY_NXDOMAIN = 4,	/* 'nxdomain': answer with NXDOMAIN */
+	DNS_RPZ_POLICY_NODATA = 5,	/* 'nodata': answer with ANCOUNT=0 */
+	DNS_RPZ_POLICY_CNAME = 6,	/* 'cname x': answer with x's rrsets */
 	DNS_RPZ_POLICY_RECORD,
 	DNS_RPZ_POLICY_WILDCNAME,
 	DNS_RPZ_POLICY_MISS,
 	DNS_RPZ_POLICY_ERROR
 } dns_rpz_policy_t;
 
+typedef isc_uint8_t	    dns_rpz_num_t;
+
+#define DNS_RPZ_MAX_ZONES   32
+#if DNS_RPZ_MAX_ZONES > 32
+# if DNS_RPZ_MAX_ZONES > 64
+#  error "rpz zone bit masks must fit in a word"
+# endif
+typedef isc_uint64_t	    dns_rpz_zbits_t;
+#else
+typedef isc_uint32_t	    dns_rpz_zbits_t;
+#endif
+
+#define DNS_RPZ_ALL_ZBITS   ((dns_rpz_zbits_t)-1)
+
+#define DNS_RPZ_INVALID_NUM DNS_RPZ_MAX_ZONES
+
+#define DNS_RPZ_ZBIT(n)	    (((dns_rpz_zbits_t)1) << (dns_rpz_num_t)(n))
+
 /*
- * Specify a response policy zone.
+ * Mask of the specified and higher numbered policy zones
+ * Avoid hassles with (1<<33) or (1<<65)
  */
-typedef struct dns_rpz_zone dns_rpz_zone_t;
+#define DNS_RPZ_ZMASK(n)    ((dns_rpz_zbits_t)((((n) >= DNS_RPZ_MAX_ZONES-1) ? \
+						0 : (1<<((n)+1))) -1))
 
+/*
+ * The number of triggers of each type in a response policy zone.
+ */
+typedef struct dns_rpz_triggers dns_rpz_triggers_t;
+struct dns_rpz_triggers {
+	int		client_ipv4;
+	int		client_ipv6;
+	int		qname;
+	int		ipv4;
+	int		ipv6;
+	int		nsdname;
+	int		nsipv4;
+	int		nsipv6;
+};
+/*
+ * A single response policy zone.
+ */
+typedef struct dns_rpz_zone dns_rpz_zone_t;
 struct dns_rpz_zone {
-	ISC_LINK(dns_rpz_zone_t) link;
-	int			 num;	  /* ordinal in list of policy zones */
-	dns_name_t		 origin;  /* Policy zone name */
-	dns_name_t		 nsdname; /* DNS_RPZ_NSDNAME_ZONE.origin */
-	dns_name_t		 passthru;/* DNS_RPZ_PASSTHRU_ZONE. */
-	dns_name_t		 cname;	  /* override value for ..._CNAME */
-	dns_ttl_t		 max_policy_ttl;
-	dns_rpz_policy_t	 policy;  /* DNS_RPZ_POLICY_GIVEN or override */
-	isc_boolean_t		 recursive_only;
-	isc_boolean_t		 defined;
+	isc_refcount_t	refs;
+	dns_rpz_num_t	num;		/* ordinal in list of policy zones */
+	dns_name_t	origin;		/* Policy zone name */
+	dns_name_t	client_ip;	/* DNS_RPZ_CLIENT_IP_ZONE.origin. */
+	dns_name_t	ip;		/* DNS_RPZ_IP_ZONE.origin. */
+	dns_name_t	nsdname;	/* DNS_RPZ_NSDNAME_ZONE.origin */
+	dns_name_t	nsip;		/* DNS_RPZ_NSIP_ZONE.origin. */
+	dns_name_t	passthru;	/* DNS_RPZ_PASSTHRU_NAME. */
+	dns_name_t	drop;		/* DNS_RPZ_DROP_NAME. */
+	dns_name_t	cname;		/* override value for ..._CNAME */
+	dns_ttl_t	max_policy_ttl;
+	dns_rpz_policy_t policy;	/* DNS_RPZ_POLICY_GIVEN or override */
+	dns_rpz_triggers_t  triggers;
 };
 
 /*
- * Radix trees for response policy IP addresses.
+ * Radix tree node for response policy IP addresses
+ */
+typedef struct dns_rpz_cidr_node dns_rpz_cidr_node_t;
+
+/*
+ * Response policy zones known to a view.
  */
-typedef struct dns_rpz_cidr	dns_rpz_cidr_t;
+typedef struct dns_rpz_zones dns_rpz_zones_t;
+struct dns_rpz_zones {
+	struct {
+		dns_rpz_zbits_t	    no_rd_ok;
+		isc_boolean_t	    break_dnssec;
+		isc_boolean_t	    qname_wait_recurse;
+		unsigned int	    min_ns_labels;
+		dns_rpz_num_t	    num_zones;
+	} p;
+	dns_rpz_zone_t		*zones[DNS_RPZ_MAX_ZONES];
+
+	dns_rpz_zbits_t		defined;
+
+	/*
+	 * The set of records for a policy zone are in one of these states:
+	 *	never loaded		    load_begun=0  have=0
+	 *	during initial loading	    load_begun=1  have=0
+	 *				and rbtdb->rpzsp == rbtdb->load_rpzsp
+	 *	after good load		    load_begun=1  have!=0
+	 *	after failed initial load   load_begun=1  have=0
+	 *				and rbtdb->load_rpzsp == NULL
+	 *	reloading after failure	    load_begun=1  have=0
+	 *	reloading after success
+	 *		main rpzs	    load_begun=1  have!=0
+	 *		load rpzs	    load_begun=1  have=0
+	 */
+	dns_rpz_zbits_t		load_begun;
+	struct {
+		dns_rpz_zbits_t	    client_ipv4;
+		dns_rpz_zbits_t	    client_ipv6;
+		dns_rpz_zbits_t	    client_ip;
+		dns_rpz_zbits_t	    qname;
+		dns_rpz_zbits_t	    ipv4;
+		dns_rpz_zbits_t	    ipv6;
+		dns_rpz_zbits_t	    ip;
+		dns_rpz_zbits_t	    nsdname;
+		dns_rpz_zbits_t	    nsipv4;
+		dns_rpz_zbits_t	    nsipv6;
+		dns_rpz_zbits_t	    nsip;
+		dns_rpz_zbits_t	    qname_skip_recurse;
+	} have;
+
+	isc_mem_t		*mctx;
+	isc_refcount_t		refs;
+	/*
+	 * One lock for short term read-only search that guarantees the
+	 * consistency of the pointers.
+	 * A second lock for maintenance that guarantees no other thread
+	 * is adding or deleting nodes.
+	 */
+	isc_mutex_t		search_lock;
+	isc_mutex_t		maint_lock;
+
+	dns_rpz_cidr_node_t	*cidr;
+	dns_rbt_t		*rbt;
+};
+
 
 /*
  * context for finding the best policy
@@ -91,22 +204,19 @@
 typedef struct {
 	unsigned int		state;
 # define DNS_RPZ_REWRITTEN	0x0001
-# define DNS_RPZ_DONE_QNAME	0x0002	/* qname checked */
-# define DNS_RPZ_DONE_QNAME_IP	0x0004	/* IP addresses of qname checked */
-# define DNS_RPZ_DONE_NSDNAME	0x0008	/* NS name missed; checking addresses */
-# define DNS_RPZ_DONE_IPv4 	0x0010
-# define DNS_RPZ_RECURSING	0x0020
-# define DNS_RPZ_HAVE_IP 	0x0040	/* a policy zone has IP addresses */
-# define DNS_RPZ_HAVE_NSIPv4	0x0080	/*		  IPv4 NISP addresses */
-# define DNS_RPZ_HAVE_NSIPv6	0x0100	/*		  IPv6 NISP addresses */
-# define DNS_RPZ_HAVE_NSDNAME	0x0200	/*		  NS names */
+# define DNS_RPZ_DONE_CLIENT_IP	0x0002	/* client IP address checked */
+# define DNS_RPZ_DONE_QNAME	0x0004	/* qname checked */
+# define DNS_RPZ_DONE_QNAME_IP	0x0008	/* IP addresses of qname checked */
+# define DNS_RPZ_DONE_NSDNAME	0x0010	/* NS name missed; checking addresses */
+# define DNS_RPZ_DONE_IPv4	0x0020
+# define DNS_RPZ_RECURSING	0x0040
 	/*
 	 * Best match so far.
 	 */
 	struct {
 		dns_rpz_type_t		type;
 		dns_rpz_zone_t		*rpz;
-		dns_rpz_cidr_bits_t	prefix;
+		dns_rpz_prefix_t	prefix;
 		dns_rpz_policy_t	policy;
 		dns_ttl_t		ttl;
 		isc_result_t		result;
@@ -141,10 +251,15 @@
 		dns_rdataset_t		*sigrdataset;
 		dns_rdatatype_t		qtype;
 	} q;
-	dns_name_t		*qname;
+	/*
+	 * p_name: current policy owner name
+	 * r_name: recursing for this name to possible policy triggers
+	 * f_name: saved found name from before recursion
+	 */
+	dns_name_t		*p_name;
 	dns_name_t		*r_name;
 	dns_name_t		*fname;
-	dns_fixedname_t		_qnamef;
+	dns_fixedname_t		_p_namef;
 	dns_fixedname_t		_r_namef;
 	dns_fixedname_t		_fnamef;
 } dns_rpz_st_t;
@@ -171,32 +286,41 @@
 const char *
 dns_rpz_policy2str(dns_rpz_policy_t policy);
 
-void
-dns_rpz_cidr_free(dns_rpz_cidr_t **cidr);
-
-void
-dns_rpz_view_destroy(dns_view_t *view);
+dns_rpz_policy_t
+dns_rpz_decode_cname(dns_rpz_zone_t *rpz, dns_rdataset_t *rdataset,
+		     dns_name_t *selfname);
 
 isc_result_t
-dns_rpz_new_cidr(isc_mem_t *mctx, dns_name_t *origin,
-		 dns_rpz_cidr_t **rbtdb_cidr);
-void
-dns_rpz_enabled_get(dns_rpz_cidr_t *cidr, dns_rpz_st_t *st);
+dns_rpz_new_zones(dns_rpz_zones_t **rpzsp, isc_mem_t *mctx);
 
 void
-dns_rpz_cidr_deleteip(dns_rpz_cidr_t *cidr, dns_name_t *name);
+dns_rpz_attach_rpzs(dns_rpz_zones_t *source, dns_rpz_zones_t **target);
 
 void
-dns_rpz_cidr_addip(dns_rpz_cidr_t *cidr, dns_name_t *name);
+dns_rpz_detach_rpzs(dns_rpz_zones_t **rpzsp);
 
 isc_result_t
-dns_rpz_cidr_find(dns_rpz_cidr_t *cidr, const isc_netaddr_t *netaddr,
-		  dns_rpz_type_t type, dns_name_t *canon_name,
-		  dns_name_t *search_name, dns_rpz_cidr_bits_t *prefix);
+dns_rpz_beginload(dns_rpz_zones_t **load_rpzsp,
+		  dns_rpz_zones_t *rpzs, dns_rpz_num_t rpz_num);
 
-dns_rpz_policy_t
-dns_rpz_decode_cname(dns_rpz_zone_t *rpz, dns_rdataset_t *rdataset,
-		     dns_name_t *selfname);
+isc_result_t
+dns_rpz_ready(dns_rpz_zones_t *rpzs,
+	      dns_rpz_zones_t **load_rpzsp, dns_rpz_num_t rpz_num);
+
+isc_result_t
+dns_rpz_add(dns_rpz_zones_t *rpzs, dns_rpz_num_t rpz_num, dns_name_t *name);
+
+void
+dns_rpz_delete(dns_rpz_zones_t *rpzs, dns_rpz_num_t rpz_num, dns_name_t *name);
+
+dns_rpz_num_t
+dns_rpz_find_ip(dns_rpz_zones_t *rpzs, dns_rpz_type_t rpz_type,
+		dns_rpz_zbits_t zbits, const isc_netaddr_t *netaddr,
+		dns_name_t *ip_name, dns_rpz_prefix_t *prefixp);
+
+dns_rpz_zbits_t
+dns_rpz_find_name(dns_rpz_zones_t *rpzs, dns_rpz_type_t rpz_type,
+		  dns_rpz_zbits_t zbits, dns_name_t *trig_name);
 
 ISC_LANG_ENDDECLS
 
diff -r -u lib/dns/include/dns/rrl.h-orig lib/dns/include/dns/rrl.h
--- lib/dns/include/dns/rrl.h-orig	2004-01-01 00:00:00.000000000 +0000
+++ lib/dns/include/dns/rrl.h	2004-01-01 00:00:00.000000000 +0000
@@ -0,0 +1,278 @@
+/*
+ * Copyright (C) 2013  Internet Systems Consortium, Inc. ("ISC")
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+ * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+
+#ifndef DNS_RRL_H
+#define DNS_RRL_H 1
+
+/*
+ * Rate limit DNS responses.
+ */
+
+#include <isc/lang.h>
+
+#include <dns/fixedname.h>
+#include <dns/rdata.h>
+#include <dns/types.h>
+
+ISC_LANG_BEGINDECLS
+
+
+/*
+ * Memory allocation or other failures.
+ */
+#define DNS_RRL_LOG_FAIL	ISC_LOG_WARNING
+/*
+ * dropped or slipped responses.
+ */
+#define DNS_RRL_LOG_DROP	ISC_LOG_INFO
+/*
+ * Major events in dropping or slipping.
+ */
+#define DNS_RRL_LOG_DEBUG1	ISC_LOG_DEBUG(3)
+/*
+ * Limit computations.
+ */
+#define DNS_RRL_LOG_DEBUG2	ISC_LOG_DEBUG(4)
+/*
+ * Even less interesting.
+ */
+#define DNS_RRL_LOG_DEBUG3	ISC_LOG_DEBUG(9)
+
+
+#define DNS_RRL_LOG_ERR_LEN	64
+#define DNS_RRL_LOG_BUF_LEN	(sizeof("would continue limiting") +	\
+				 DNS_RRL_LOG_ERR_LEN +			\
+				 sizeof(" responses to ") +		\
+				 ISC_NETADDR_FORMATSIZE +		\
+				 sizeof("/128 for IN ") +		\
+				 DNS_RDATATYPE_FORMATSIZE +		\
+				 DNS_NAME_FORMATSIZE)
+
+
+typedef struct dns_rrl_hash dns_rrl_hash_t;
+
+/*
+ * Response types.
+ */
+typedef enum {
+	DNS_RRL_RTYPE_FREE = 0,
+	DNS_RRL_RTYPE_QUERY,
+	DNS_RRL_RTYPE_REFERRAL,
+	DNS_RRL_RTYPE_NODATA,
+	DNS_RRL_RTYPE_NXDOMAIN,
+	DNS_RRL_RTYPE_ERROR,
+	DNS_RRL_RTYPE_ALL,
+	DNS_RRL_RTYPE_TCP,
+} dns_rrl_rtype_t;
+
+/*
+ * A rate limit bucket key.
+ * This should be small to limit the total size of the database.
+ * The hash of the qname should be wide enough to make the probability
+ * of collisions among requests from a single IP address block less than 50%.
+ * We need a 32-bit hash value for 10000 qps (e.g. random qnames forged
+ * by attacker) to collide with legitimate qnames from the target with
+ * probability at most 1%.
+ */
+#define DNS_RRL_MAX_PREFIX  64
+typedef union dns_rrl_key dns_rrl_key_t;
+union dns_rrl_key {
+	struct {
+		isc_uint32_t	    ip[DNS_RRL_MAX_PREFIX/32];
+		isc_uint32_t	    qname_hash;
+		dns_rdatatype_t	    qtype;
+		isc_uint8_t	    qclass;
+		dns_rrl_rtype_t	    rtype   :4; /* 3 bits + sign bit */
+		isc_boolean_t	    ipv6    :1;
+	} s;
+	isc_uint16_t	w[1];
+};
+
+/*
+ * A rate-limit entry.
+ * This should be small to limit the total size of the table of entries.
+ */
+typedef struct dns_rrl_entry dns_rrl_entry_t;
+typedef ISC_LIST(dns_rrl_entry_t) dns_rrl_bin_t;
+struct dns_rrl_entry {
+	ISC_LINK(dns_rrl_entry_t) lru;
+	ISC_LINK(dns_rrl_entry_t) hlink;
+	dns_rrl_key_t	key;
+# define DNS_RRL_RESPONSE_BITS	24
+	signed int	responses   :DNS_RRL_RESPONSE_BITS;
+# define DNS_RRL_QNAMES_BITS	8
+	unsigned int	log_qname   :DNS_RRL_QNAMES_BITS;
+
+# define DNS_RRL_TS_GEN_BITS	2
+	unsigned int	ts_gen	    :DNS_RRL_TS_GEN_BITS;
+	isc_boolean_t	ts_valid    :1;
+# define DNS_RRL_HASH_GEN_BITS	1
+	unsigned int	hash_gen    :DNS_RRL_HASH_GEN_BITS;
+	isc_boolean_t	logged	    :1;
+# define DNS_RRL_LOG_BITS	11
+	unsigned int	log_secs    :DNS_RRL_LOG_BITS;
+
+# define DNS_RRL_TS_BITS	12
+	unsigned int	ts	    :DNS_RRL_TS_BITS;
+
+# define DNS_RRL_MAX_SLIP	10
+	unsigned int	slip_cnt    :4;
+};
+
+#define DNS_RRL_MAX_TIME_TRAVEL	5
+#define DNS_RRL_FOREVER		(1<<DNS_RRL_TS_BITS)
+#define DNS_RRL_MAX_TS		(DNS_RRL_FOREVER - 1)
+
+#define DNS_RRL_MAX_RESPONSES	((1<<(DNS_RRL_RESPONSE_BITS-1))-1)
+#define DNS_RRL_MAX_WINDOW	3600
+#if DNS_RRL_MAX_WINDOW >= DNS_RRL_MAX_TS
+#error "DNS_RRL_MAX_WINDOW is too large"
+#endif
+#define DNS_RRL_MAX_RATE	1000
+#if DNS_RRL_MAX_RATE >= (DNS_RRL_MAX_RESPONSES / DNS_RRL_MAX_WINDOW)
+#error "DNS_RRL_MAX_rate is too large"
+#endif
+
+#if (1<<DNS_RRL_LOG_BITS) >= DNS_RRL_FOREVER
+#error DNS_RRL_LOG_BITS is too big
+#endif
+#define DNS_RRL_MAX_LOG_SECS	1800
+#if DNS_RRL_MAX_LOG_SECS >= (1<<DNS_RRL_LOG_BITS)
+#error "DNS_RRL_MAX_LOG_SECS is too large"
+#endif
+#define DNS_RRL_STOP_LOG_SECS	60
+#if DNS_RRL_STOP_LOG_SECS >= (1<<DNS_RRL_LOG_BITS)
+#error "DNS_RRL_STOP_LOG_SECS is too large"
+#endif
+
+
+/*
+ * A hash table of rate-limit entries.
+ */
+struct dns_rrl_hash {
+	isc_stdtime_t	check_time;
+	unsigned int	gen	    :DNS_RRL_HASH_GEN_BITS;
+	int		length;
+	dns_rrl_bin_t	bins[1];
+};
+
+/*
+ * A block of rate-limit entries.
+ */
+typedef struct dns_rrl_block dns_rrl_block_t;
+struct dns_rrl_block {
+	ISC_LINK(dns_rrl_block_t) link;
+	int		size;
+	dns_rrl_entry_t	entries[1];
+};
+
+/*
+ * A rate limited qname buffer.
+ */
+typedef struct dns_rrl_qname_buf dns_rrl_qname_buf_t;
+struct dns_rrl_qname_buf {
+	ISC_LINK(dns_rrl_qname_buf_t) link;
+	const dns_rrl_entry_t *e;
+	unsigned int	    index;
+	dns_fixedname_t	    qname;
+};
+
+typedef struct dns_rrl_rate dns_rrl_rate_t;
+struct dns_rrl_rate {
+	int	    r;
+	int	    scaled;
+	const char  *str;
+};
+
+/*
+ * Per-view query rate limit parameters and a pointer to database.
+ */
+typedef struct dns_rrl dns_rrl_t;
+struct dns_rrl {
+	isc_mutex_t	lock;
+	isc_mem_t	*mctx;
+
+	isc_boolean_t	log_only;
+	dns_rrl_rate_t	responses_per_second;
+	dns_rrl_rate_t	referrals_per_second;
+	dns_rrl_rate_t	nodata_per_second;
+	dns_rrl_rate_t	nxdomains_per_second;
+	dns_rrl_rate_t	errors_per_second;
+	dns_rrl_rate_t	all_per_second;
+	dns_rrl_rate_t	slip;
+	int		window;
+	double		qps_scale;
+	int		max_entries;
+
+	dns_acl_t	*exempt;
+
+	int		num_entries;
+
+	int		qps_responses;
+	isc_stdtime_t	qps_time;
+	double		qps;
+
+	unsigned int	probes;
+	unsigned int	searches;
+
+	ISC_LIST(dns_rrl_block_t) blocks;
+	ISC_LIST(dns_rrl_entry_t) lru;
+
+	dns_rrl_hash_t	*hash;
+	dns_rrl_hash_t	*old_hash;
+	unsigned int	hash_gen;
+
+	unsigned int	ts_gen;
+# define DNS_RRL_TS_BASES   (1<<DNS_RRL_TS_GEN_BITS)
+	isc_stdtime_t	ts_bases[DNS_RRL_TS_BASES];
+
+	int		ipv4_prefixlen;
+	isc_uint32_t	ipv4_mask;
+	int		ipv6_prefixlen;
+	isc_uint32_t	ipv6_mask[4];
+
+	isc_stdtime_t	log_stops_time;
+	dns_rrl_entry_t	*last_logged;
+	int		num_logged;
+	int		num_qnames;
+	ISC_LIST(dns_rrl_qname_buf_t) qname_free;
+# define DNS_RRL_QNAMES	    (1<<DNS_RRL_QNAMES_BITS)
+	dns_rrl_qname_buf_t *qnames[DNS_RRL_QNAMES];
+};
+
+typedef enum {
+	DNS_RRL_RESULT_OK,
+	DNS_RRL_RESULT_DROP,
+	DNS_RRL_RESULT_SLIP,
+} dns_rrl_result_t;
+
+dns_rrl_result_t
+dns_rrl(dns_view_t *view,
+	const isc_sockaddr_t *client_addr, isc_boolean_t is_tcp,
+	dns_rdataclass_t rdclass, dns_rdatatype_t qtype,
+	dns_name_t *qname, isc_result_t resp_result, isc_stdtime_t now,
+	isc_boolean_t wouldlog, char *log_buf, unsigned int log_buf_len);
+
+void
+dns_rrl_view_destroy(dns_view_t *view);
+
+isc_result_t
+dns_rrl_init(dns_rrl_t **rrlp, dns_view_t *view, int min_entries);
+
+ISC_LANG_ENDDECLS
+
+#endif /* DNS_RRL_H */
diff -r -u lib/dns/include/dns/view.h-orig lib/dns/include/dns/view.h
--- lib/dns/include/dns/view.h-orig	2004-01-01 00:00:00.000000000 +0000
+++ lib/dns/include/dns/view.h	2004-01-01 00:00:00.000000000 +0000
@@ -73,6 +73,7 @@
 
 #include <dns/acl.h>
 #include <dns/fixedname.h>
+#include <dns/rrl.h>
 #include <dns/rdatastruct.h>
 #include <dns/rpz.h>
 #include <dns/types.h>
@@ -142,6 +143,7 @@
 	dns_rbt_t *			answeracl_exclude;
 	dns_rbt_t *			denyanswernames;
 	dns_rbt_t *			answernames_exclude;
+	dns_rrl_t *			rrl;
 	isc_boolean_t			provideixfr;
 	isc_boolean_t			requestnsid;
 	dns_ttl_t			maxcachettl;
@@ -162,10 +164,7 @@
 	dns_acl_t *			v4_aaaa_acl;
 	dns_dns64list_t 		dns64;
 	unsigned int 			dns64cnt;
-	ISC_LIST(dns_rpz_zone_t)	rpz_zones;
-	isc_boolean_t			rpz_recursive_only;
-	isc_boolean_t			rpz_break_dnssec;
-	unsigned int			rpz_min_ns_labels;
+	dns_rpz_zones_t			*rpzs;
 
 	/*
 	 * Configurable data for server use only,
diff -r -u lib/dns/include/dns/zone.h-orig lib/dns/include/dns/zone.h
--- lib/dns/include/dns/zone.h-orig	2004-01-01 00:00:00.000000000 +0000
+++ lib/dns/include/dns/zone.h	2004-01-01 00:00:00.000000000 +0000
@@ -2081,13 +2081,14 @@
  */
 
 isc_result_t
-dns_zone_rpz_enable(dns_zone_t *zone);
+dns_zone_rpz_enable(dns_zone_t *zone, dns_rpz_zones_t *rpzs,
+		    dns_rpz_num_t rpz_num);
 /*%
  * Set the response policy associated with a zone.
  */
 
-isc_boolean_t
-dns_zone_get_rpz(dns_zone_t *zone);
+dns_rpz_num_t
+dns_zone_get_rpz_num(dns_zone_t *zone);
 
 void
 dns_zone_setstatlevel(dns_zone_t *zone, dns_zonestat_level_t level);
diff -r -u lib/dns/log.c-orig lib/dns/log.c
--- lib/dns/log.c-orig	2004-01-01 00:00:00.000000000 +0000
+++ lib/dns/log.c	2004-01-01 00:00:00.000000000 +0000
@@ -45,6 +45,7 @@
 	{ "delegation-only", 0 },
 	{ "edns-disabled", 0 },
 	{ "rpz",	0 },
+	{ "rate-limit",	0 },
 	{ NULL, 	0 }
 };
 
diff -r -u lib/dns/rbtdb.c-orig lib/dns/rbtdb.c
--- lib/dns/rbtdb.c-orig	2004-01-01 00:00:00.000000000 +0000
+++ lib/dns/rbtdb.c	2004-01-01 00:00:00.000000000 +0000
@@ -453,7 +453,9 @@
 	dns_rbt_t *                     tree;
 	dns_rbt_t *			nsec;
 	dns_rbt_t *			nsec3;
-	dns_rpz_cidr_t *		rpz_cidr;
+	dns_rpz_zones_t			*rpzs;
+	dns_rpz_num_t			rpz_num;
+	dns_rpz_zones_t			*load_rpzs;
 
 	/* Unlocked */
 	unsigned int                    quantum;
@@ -972,8 +974,18 @@
 		dns_stats_detach(&rbtdb->rrsetstats);
 
 #ifdef BIND9
-	if (rbtdb->rpz_cidr != NULL)
-		dns_rpz_cidr_free(&rbtdb->rpz_cidr);
+	if (rbtdb->load_rpzs != NULL) {
+		/*
+		 * We must be cleaning up after a failed zone loading.
+		 */
+		REQUIRE(rbtdb->rpzs != NULL &&
+			rbtdb->rpz_num < rbtdb->rpzs->p.num_zones);
+		dns_rpz_detach_rpzs(&rbtdb->load_rpzs);
+	}
+	if (rbtdb->rpzs != NULL) {
+		REQUIRE(rbtdb->rpz_num < rbtdb->rpzs->p.num_zones);
+		dns_rpz_detach_rpzs(&rbtdb->rpzs);
+	}
 #endif
 
 	isc_mem_put(rbtdb->common.mctx, rbtdb->node_locks,
@@ -1515,11 +1527,11 @@
 	switch (node->nsec) {
 	case DNS_RBT_NSEC_NORMAL:
 #ifdef BIND9
-		if (rbtdb->rpz_cidr != NULL) {
+		if (rbtdb->rpzs != NULL) {
 			dns_fixedname_init(&fname);
 			name = dns_fixedname_name(&fname);
 			dns_rbt_fullnamefromnode(node, name);
-			dns_rpz_cidr_deleteip(rbtdb->rpz_cidr, name);
+			dns_rpz_delete(rbtdb->rpzs, rbtdb->rpz_num, name);
 		}
 #endif
 		result = dns_rbt_deletenode(rbtdb->tree, node, ISC_FALSE);
@@ -1555,11 +1567,11 @@
 					      isc_result_totext(result));
 			}
 		}
+		result = dns_rbt_deletenode(rbtdb->tree, node, ISC_FALSE);
 #ifdef BIND9
-		if (rbtdb->rpz_cidr != NULL)
-			dns_rpz_cidr_deleteip(rbtdb->rpz_cidr, name);
+		if (rbtdb->rpzs != NULL)
+			dns_rpz_delete(rbtdb->rpzs, rbtdb->rpz_num, name);
 #endif
-		result = dns_rbt_deletenode(rbtdb->tree, node, ISC_FALSE);
 		break;
 	case DNS_RBT_NSEC_NSEC:
 		result = dns_rbt_deletenode(rbtdb->nsec, node, ISC_FALSE);
@@ -1573,7 +1585,7 @@
 			      DNS_LOGCATEGORY_DATABASE,
 			      DNS_LOGMODULE_CACHE,
 			      ISC_LOG_WARNING,
-			      "delete_cnode(): "
+			      "delete_node(): "
 			      "dns_rbt_deletenode: %s",
 			      isc_result_totext(result));
 	}
@@ -2538,14 +2550,15 @@
 		result = dns_rbt_addnode(tree, name, &node);
 		if (result == ISC_R_SUCCESS) {
 #ifdef BIND9
-			if (tree == rbtdb->tree && rbtdb->rpz_cidr != NULL) {
+			if (rbtdb->rpzs != NULL && tree == rbtdb->tree) {
 				dns_fixedname_t fnamef;
 				dns_name_t *fname;
 
 				dns_fixedname_init(&fnamef);
 				fname = dns_fixedname_name(&fnamef);
 				dns_rbt_fullnamefromnode(node, fname);
-				dns_rpz_cidr_addip(rbtdb->rpz_cidr, fname);
+				result = dns_rpz_add(rbtdb->rpzs,
+						     rbtdb->rpz_num, fname);
 			}
 #endif
 			dns_rbt_namefromnode(node, &nodename);
@@ -4547,228 +4560,45 @@
 	return (result);
 }
 
+#ifdef BIND9
 /*
- * Mark a database for response policy rewriting
- * or find which RPZ data is available.
+ * Connect this RBTDB to the response policy zone summary data for the view.
  */
-#ifdef BIND9
-static isc_result_t
-rpz_enabled(dns_db_t *db, dns_rpz_st_t *st)
-{
-	dns_rbtdb_t *rbtdb;
-	isc_result_t result;
+static void
+rpz_attach(dns_db_t *db, dns_rpz_zones_t *rpzs, dns_rpz_num_t rpz_num) {
+	dns_rbtdb_t * rbtdb;
 
-	result = ISC_R_SUCCESS;
 	rbtdb = (dns_rbtdb_t *)db;
 	REQUIRE(VALID_RBTDB(rbtdb));
-	RWLOCK(&rbtdb->tree_lock, isc_rwlocktype_read);
-	if (st != NULL) {
-		dns_rpz_enabled_get(rbtdb->rpz_cidr, st);
-	} else {
-		result = dns_rpz_new_cidr(rbtdb->common.mctx,
-					  &rbtdb->common.origin,
-					  &rbtdb->rpz_cidr);
-	}
-	RWUNLOCK(&rbtdb->tree_lock, isc_rwlocktype_read);
-	return (result);
+
+	RWLOCK(&rbtdb->tree_lock, isc_rwlocktype_write);
+	REQUIRE(rbtdb->rpzs == NULL && rbtdb->rpz_num == DNS_RPZ_INVALID_NUM);
+	dns_rpz_attach_rpzs(rpzs, &rbtdb->rpzs);
+	rbtdb->rpz_num = rpz_num;
+	RWUNLOCK(&rbtdb->tree_lock, isc_rwlocktype_write);
 }
 
 /*
- * Search the CDIR block tree of a response policy tree of trees for all of
- * the IP addresses in an A or AAAA rdataset.
- * Among the policies for all IPv4 and IPv6 addresses for a name, choose
- *	the earliest configured policy,
- *	QNAME over IP over NSDNAME over NSIP,
- *	the longest prefix,
- *	the lexically smallest address.
- * The caller must have already checked that any existing policy was not
- * configured earlier than this policy zone and does not have a higher
- * precedence type.
+ * Enable this RBTDB as a response policy zone.
  */
-static void
-rpz_findips(dns_rpz_zone_t *rpz, dns_rpz_type_t rpz_type,
-	    dns_zone_t *zone, dns_db_t *db, dns_dbversion_t *version,
-	    dns_rdataset_t *ardataset, dns_rpz_st_t *st,
-	    dns_name_t *query_qname)
-{
-	dns_rbtdb_t *rbtdb;
-	struct in_addr ina;
-	struct in6_addr in6a;
-	isc_netaddr_t netaddr;
-	dns_fixedname_t selfnamef, qnamef;
-	dns_name_t *selfname, *qname;
-	dns_rbtnode_t *node;
-	dns_rdataset_t zrdataset;
-	dns_rpz_cidr_bits_t prefix;
+static isc_result_t
+rpz_ready(dns_db_t *db) {
+	dns_rbtdb_t * rbtdb;
 	isc_result_t result;
-	dns_rpz_policy_t rpz_policy;
-	dns_ttl_t ttl;
 
 	rbtdb = (dns_rbtdb_t *)db;
 	REQUIRE(VALID_RBTDB(rbtdb));
-	RWLOCK(&rbtdb->tree_lock, isc_rwlocktype_read);
-
-	if (rbtdb->rpz_cidr == NULL) {
-		RWUNLOCK(&rbtdb->tree_lock, isc_rwlocktype_read);
-		return;
-	}
-
-	dns_fixedname_init(&selfnamef);
-	dns_fixedname_init(&qnamef);
-	selfname = dns_fixedname_name(&selfnamef);
-	qname = dns_fixedname_name(&qnamef);
-
-	for (result = dns_rdataset_first(ardataset);
-	     result == ISC_R_SUCCESS;
-	     result = dns_rdataset_next(ardataset)) {
-		dns_rdata_t rdata = DNS_RDATA_INIT;
-		dns_rdataset_current(ardataset, &rdata);
-		switch (rdata.type) {
-		case dns_rdatatype_a:
-			INSIST(rdata.length == 4);
-			memcpy(&ina.s_addr, rdata.data, 4);
-			isc_netaddr_fromin(&netaddr, &ina);
-			break;
-		case dns_rdatatype_aaaa:
-			INSIST(rdata.length == 16);
-			memcpy(in6a.s6_addr, rdata.data, 16);
-			isc_netaddr_fromin6(&netaddr, &in6a);
-			break;
-		default:
-			continue;
-		}
-
-		result = dns_rpz_cidr_find(rbtdb->rpz_cidr, &netaddr, rpz_type,
-					   selfname, qname, &prefix);
-		if (result != ISC_R_SUCCESS)
-			continue;
 
-		/*
-		 * If we already have a rule, discard this new rule if
-		 * is not better.
-		 * The caller has checked that st->m.rpz->num > rpz->num
-		 * or st->m.rpz->num == rpz->num and st->m.type >= rpz_type
-		 */
-		if (st->m.policy != DNS_RPZ_POLICY_MISS &&
-		    st->m.rpz->num == rpz->num &&
-		    (st->m.type < rpz_type ||
-		     (st->m.type == rpz_type &&
-		      (st->m.prefix > prefix ||
-		       (st->m.prefix == prefix &&
-			0 > dns_name_rdatacompare(st->qname, qname))))))
-			continue;
-
-		/*
-		 * We have rpz_st an entry with a prefix at least as long as
-		 * the prefix of the entry we had before.  Find the node
-		 * corresponding to CDIR tree entry.
-		 */
-		node = NULL;
-		result = dns_rbt_findnode(rbtdb->tree, qname, NULL,
-					  &node, NULL, 0, NULL, NULL);
-		if (result != ISC_R_SUCCESS) {
-			char namebuf[DNS_NAME_FORMATSIZE];
-
-			dns_name_format(qname, namebuf, sizeof(namebuf));
-			isc_log_write(dns_lctx, DNS_LOGCATEGORY_RPZ,
-				      DNS_LOGMODULE_RBTDB, DNS_RPZ_ERROR_LEVEL,
-				      "rpz_findips findnode(%s) failed: %s",
-				      namebuf, isc_result_totext(result));
-			continue;
-		}
-		/*
-		 * First look for a simple rewrite of the IP address.
-		 * If that fails, look for a CNAME.  If we cannot find
-		 * a CNAME or the CNAME is neither of the special forms
-		 * "*" or ".", treat it like a real CNAME.
-		 */
-		dns_rdataset_init(&zrdataset);
-		result = dns_db_findrdataset(db, node, version, ardataset->type,
-					     0, 0, &zrdataset, NULL);
-		if (result != ISC_R_SUCCESS)
-			result = dns_db_findrdataset(db, node, version,
-						     dns_rdatatype_cname,
-						     0, 0, &zrdataset, NULL);
-		if (result == ISC_R_SUCCESS) {
-			if (zrdataset.type != dns_rdatatype_cname) {
-				rpz_policy = DNS_RPZ_POLICY_RECORD;
-			} else {
-				rpz_policy = dns_rpz_decode_cname(rpz,
-								  &zrdataset,
-								  selfname);
-				if (rpz_policy == DNS_RPZ_POLICY_RECORD ||
-				    rpz_policy == DNS_RPZ_POLICY_WILDCNAME)
-					result = DNS_R_CNAME;
-			}
-			ttl = zrdataset.ttl;
-		} else {
-			rpz_policy = DNS_RPZ_POLICY_RECORD;
-			result = DNS_R_NXRRSET;
-			ttl = DNS_RPZ_TTL_DEFAULT;
-		}
-
-		/*
-		 * Use an overriding action specified in the configuration file
-		 */
-		if (rpz->policy != DNS_RPZ_POLICY_GIVEN) {
-			/*
-			 * only log DNS_RPZ_POLICY_DISABLED hits
-			 */
-			if (rpz->policy == DNS_RPZ_POLICY_DISABLED) {
-				if (isc_log_wouldlog(dns_lctx,
-						     DNS_RPZ_INFO_LEVEL)) {
-					char qname_buf[DNS_NAME_FORMATSIZE];
-					char rpz_qname_buf[DNS_NAME_FORMATSIZE];
-					dns_name_format(query_qname, qname_buf,
-							sizeof(qname_buf));
-					dns_name_format(qname, rpz_qname_buf,
-							sizeof(rpz_qname_buf));
-
-					isc_log_write(dns_lctx,
-						DNS_LOGCATEGORY_RPZ,
-						DNS_LOGMODULE_RBTDB,
-						DNS_RPZ_INFO_LEVEL,
-						"disabled rpz %s %s rewrite"
-						" %s via %s",
-						dns_rpz_type2str(rpz_type),
-						dns_rpz_policy2str(rpz_policy),
-						qname_buf, rpz_qname_buf);
-				}
-				continue;
-			}
-
-			rpz_policy = rpz->policy;
-		}
-
-		if (dns_rdataset_isassociated(st->m.rdataset))
-			dns_rdataset_disassociate(st->m.rdataset);
-		if (st->m.node != NULL)
-			dns_db_detachnode(st->m.db, &st->m.node);
-		if (st->m.db != NULL)
-			dns_db_detach(&st->m.db);
-		if (st->m.zone != NULL)
-			dns_zone_detach(&st->m.zone);
-		st->m.rpz = rpz;
-		st->m.type = rpz_type;
-		st->m.prefix = prefix;
-		st->m.policy = rpz_policy;
-		st->m.ttl = ISC_MIN(ttl, rpz->max_policy_ttl);
-		st->m.result = result;
-		dns_name_copy(qname, st->qname, NULL);
-		if ((rpz_policy == DNS_RPZ_POLICY_RECORD ||
-		    rpz_policy == DNS_RPZ_POLICY_WILDCNAME) &&
-		    result != DNS_R_NXRRSET) {
-			dns_rdataset_clone(&zrdataset,st->m.rdataset);
-			dns_db_attachnode(db, node, &st->m.node);
-		}
-		dns_db_attach(db, &st->m.db);
-		st->m.version = version;
-		dns_zone_attach(zone, &st->m.zone);
-		if (dns_rdataset_isassociated(&zrdataset))
-			dns_rdataset_disassociate(&zrdataset);
+	RWLOCK(&rbtdb->tree_lock, isc_rwlocktype_write);
+	if (rbtdb->rpzs == NULL) {
+		INSIST(rbtdb->rpz_num == DNS_RPZ_INVALID_NUM);
+		result = ISC_R_SUCCESS;
+	} else {
+		result = dns_rpz_ready(rbtdb->rpzs, &rbtdb->load_rpzs,
+				       rbtdb->rpz_num);
 	}
-
-	RWUNLOCK(&rbtdb->tree_lock, isc_rwlocktype_read);
+	RWUNLOCK(&rbtdb->tree_lock, isc_rwlocktype_write);
+	return (result);
 }
 #endif
 
@@ -6874,8 +6704,9 @@
 	noderesult = dns_rbt_addnode(rbtdb->tree, name, nodep);
 
 #ifdef BIND9
-	if (noderesult == ISC_R_SUCCESS && rbtdb->rpz_cidr != NULL)
-		dns_rpz_cidr_addip(rbtdb->rpz_cidr, name);
+	if (rbtdb->rpzs != NULL && noderesult == ISC_R_SUCCESS)
+		noderesult = dns_rpz_add(rbtdb->load_rpzs, rbtdb->rpz_num,
+					 name);
 #endif
 
 	if (!hasnsec)
@@ -7060,6 +6891,20 @@
 
 	RBTDB_LOCK(&rbtdb->lock, isc_rwlocktype_write);
 
+#ifdef BIND9
+	if (rbtdb->rpzs != NULL) {
+		isc_result_t result;
+
+		result = dns_rpz_beginload(&rbtdb->load_rpzs,
+					   rbtdb->rpzs, rbtdb->rpz_num);
+		if (result != ISC_R_SUCCESS) {
+			isc_mem_put(rbtdb->common.mctx, loadctx,
+				    sizeof(*loadctx));
+			return (result);
+		}
+	}
+#endif
+
 	REQUIRE((rbtdb->attributes & (RBTDB_ATTR_LOADED|RBTDB_ATTR_LOADING))
 		== 0);
 	rbtdb->attributes |= RBTDB_ATTR_LOADING;
@@ -7461,8 +7306,8 @@
 	isdnssec,
 	NULL,
 #ifdef BIND9
-	rpz_enabled,
-	rpz_findips,
+	rpz_attach,
+	rpz_ready,
 #else
 	NULL,
 	NULL,
@@ -7776,6 +7621,9 @@
 	}
 	rbtdb->attributes = 0;
 	rbtdb->task = NULL;
+	rbtdb->rpzs = NULL;
+	rbtdb->load_rpzs = NULL;
+	rbtdb->rpz_num = DNS_RPZ_INVALID_NUM;
 
 	/*
 	 * Version Initialization.
diff -r -u lib/dns/rpz.c-orig lib/dns/rpz.c
--- lib/dns/rpz.c-orig	2004-01-01 00:00:00.000000000 +0000
+++ lib/dns/rpz.c	2004-01-01 00:00:00.000000000 +0000
@@ -37,6 +37,7 @@
 #include <dns/rdataset.h>
 #include <dns/rdatastruct.h>
 #include <dns/result.h>
+#include <dns/rbt.h>
 #include <dns/rpz.h>
 #include <dns/view.h>
 
@@ -44,9 +45,13 @@
 /*
  * Parallel radix trees for databases of response policy IP addresses
  *
- * The radix or Patricia trees are somewhat specialized to handle response
- * policy addresses by representing the two test of IP IP addresses and name
- * server IP addresses in a single tree.
+ * The radix or patricia trees are somewhat specialized to handle response
+ * policy addresses by representing the two sets of IP addresses and name
+ * server IP addresses in a single tree.  One set of IP addresses is
+ * for rpz-ip policies or policies triggered by addresses in A or
+ * AAAA records in responses.
+ * The second set is for rpz-nsip policies or policies triggered by addresses
+ * in A or AAAA records for NS records that are authorities for responses.
  *
  * Each leaf indicates that an IP address is listed in the IP address or the
  * name server IP address policy sub-zone (or both) of the corresponding
@@ -55,7 +60,8 @@
  * tree, the node in the policy zone's database is found by converting
  * the IP address to a domain name in a canonical form.
  *
- * The response policy zone canonical form of IPv6 addresses is one of:
+ *
+ * The response policy zone canonical form of an IPv6 address is one of:
  *	prefix.W.W.W.W.W.W.W.W
  *	prefix.WORDS.zz
  *	prefix.WORDS.zz.WORDS
@@ -72,7 +78,7 @@
  *	prefix	is the prefix length of the address between 1 and 32
  *	B	is a number between 0 and 255
  *
- * IPv4 addresses are distinguished from IPv6 addresses by having
+ * Names for IPv4 addresses are distinguished from IPv6 addresses by having
  * 5 labels all of which are numbers, and a prefix between 1 and 32.
  */
 
@@ -90,43 +96,89 @@
 } dns_rpz_cidr_key_t;
 
 #define ADDR_V4MAPPED		0xffff
+#define KEY_IS_IPV4(prefix,ip) ((prefix) >= 96 && (ip)->w[0] == 0 &&	\
+				(ip)->w[1] == 0 && (ip)->w[2] == ADDR_V4MAPPED)
+
+#define DNS_RPZ_WORD_MASK(b) ((b) == 0 ? (dns_rpz_cidr_word_t)(-1)	\
+			      : ((dns_rpz_cidr_word_t)(-1)		\
+				 << (DNS_RPZ_CIDR_WORD_BITS - (b))))
+
+/*
+ * Get bit #n from the array of words of an IP address.
+ */
+#define DNS_RPZ_IP_BIT(ip, n) (1 & ((ip)->w[(n)/DNS_RPZ_CIDR_WORD_BITS] >>  \
+				    (DNS_RPZ_CIDR_WORD_BITS		    \
+				     - 1 - ((n) % DNS_RPZ_CIDR_WORD_BITS))))
 
-#define DNS_RPZ_WORD_MASK(b)				\
-	((b) == 0 ? (dns_rpz_cidr_word_t)(-1)		\
-		  : ((dns_rpz_cidr_word_t)(-1)		\
-		    << (DNS_RPZ_CIDR_WORD_BITS - (b))))
-
-#define DNS_RPZ_IP_BIT(ip, bitno) \
-	(1 & ((ip)->w[(bitno)/DNS_RPZ_CIDR_WORD_BITS] >> \
-	    (DNS_RPZ_CIDR_WORD_BITS - 1 - ((bitno) % DNS_RPZ_CIDR_WORD_BITS))))
+/*
+ * A triplet of arrays of bits flagging the existence of
+ * client-IP, IP, and NSIP policy triggers.
+ */
+typedef struct dns_rpz_addr_zbits dns_rpz_addr_zbits_t;
+struct dns_rpz_addr_zbits {
+	dns_rpz_zbits_t		client_ip;
+	dns_rpz_zbits_t		ip;
+	dns_rpz_zbits_t		nsip;
+};
 
-typedef struct dns_rpz_cidr_node	dns_rpz_cidr_node_t;
-typedef isc_uint8_t			dns_rpz_cidr_flags_t;
+/*
+ * A CIDR or radix tree node.
+ */
 struct dns_rpz_cidr_node {
-	dns_rpz_cidr_node_t		*parent;
-	dns_rpz_cidr_node_t		*child[2];
-	dns_rpz_cidr_key_t		ip;
-	dns_rpz_cidr_bits_t		bits;
-	dns_rpz_cidr_flags_t		flags;
-#define	DNS_RPZ_CIDR_FG_IP	 0x01	/* has IP data or is parent of IP */
-#define	DNS_RPZ_CIDR_FG_IP_DATA	 0x02	/* has IP data */
-#define	DNS_RPZ_CIDR_FG_NSIPv4	 0x04	/* has or is parent of NSIPv4 data */
-#define	DNS_RPZ_CIDR_FG_NSIPv6	 0x08	/* has or is parent of NSIPv6 data */
-#define	DNS_RPZ_CIDR_FG_NSIP_DATA 0x10	/* has NSIP data */
+	dns_rpz_cidr_node_t	*parent;
+	dns_rpz_cidr_node_t	*child[2];
+	dns_rpz_cidr_key_t	ip;
+	dns_rpz_prefix_t	prefix;
+	dns_rpz_addr_zbits_t	set;
+	dns_rpz_addr_zbits_t	sum;
+};
+
+/*
+ * The data in a RBT node has two pairs of bits for policy zones.
+ * One pair is for the corresponding name of the node such as example.com
+ * and the other pair is for a wildcard child such as *.example.com.
+ */
+/*
+ * A pair of arrays of bits flagging the existence of
+ * QNAME and NSDNAME policy triggers.
+ */
+typedef struct dns_rpz_nm_zbits dns_rpz_nm_zbits_t;
+struct dns_rpz_nm_zbits {
+	dns_rpz_zbits_t		qname;
+	dns_rpz_zbits_t		ns;
 };
 
-struct dns_rpz_cidr {
-	isc_mem_t		*mctx;
-	isc_boolean_t		have_nsdname;	/* zone has NSDNAME record */
-	dns_rpz_cidr_node_t	*root;
-	dns_name_t		ip_name;	/* RPZ_IP_ZONE.origin. */
-	dns_name_t		nsip_name;      /* RPZ_NSIP_ZONE.origin. */
-	dns_name_t		nsdname_name;	/* RPZ_NSDNAME_ZONE.origin */
+typedef struct dns_rpz_nm_data dns_rpz_nm_data_t;
+struct dns_rpz_nm_data {
+	dns_rpz_nm_zbits_t	set;
+	dns_rpz_nm_zbits_t	wild;
 };
 
+#if 0
+/*
+ * Catch a name while debugging.
+ */
+static void
+catch_name(const dns_name_t *src_name, const char *tgt, const char *str) {
+	dns_fixedname_t tgt_namef;
+	dns_name_t *tgt_name;
+
+	dns_fixedname_init(&tgt_namef);
+	tgt_name = dns_fixedname_name(&tgt_namef);
+	dns_name_fromstring(tgt_name, tgt, DNS_NAME_DOWNCASE, NULL);
+	if (dns_name_equal(src_name, tgt_name)) {
+		isc_log_write(dns_lctx, DNS_LOGCATEGORY_RPZ,
+			      DNS_LOGMODULE_RBTDB, DNS_RPZ_ERROR_LEVEL,
+			      "rpz hit failed: %s %s", str, tgt);
+	}
+}
+#endif
+
 const char *
 dns_rpz_type2str(dns_rpz_type_t type) {
 	switch (type) {
+	case DNS_RPZ_TYPE_CLIENT_IP:
+		return ("CLIENT-IP");
 	case DNS_RPZ_TYPE_QNAME:
 		return ("QNAME");
 	case DNS_RPZ_TYPE_IP:
@@ -138,32 +190,33 @@
 	case DNS_RPZ_TYPE_BAD:
 		break;
 	}
-	FATAL_ERROR(__FILE__, __LINE__,
-		    "impossible rpz type %d", type);
+	FATAL_ERROR(__FILE__, __LINE__, "impossible rpz type %d", type);
 	return ("impossible");
 }
 
 dns_rpz_policy_t
 dns_rpz_str2policy(const char *str) {
+	static struct {
+		const char *str;
+		dns_rpz_policy_t policy;
+	} tbl[] = {
+		{"given",	DNS_RPZ_POLICY_GIVEN},
+		{"disabled",	DNS_RPZ_POLICY_DISABLED},
+		{"passthru",	DNS_RPZ_POLICY_PASSTHRU},
+		{"drop",	DNS_RPZ_POLICY_DROP},
+		{"nxdomain",	DNS_RPZ_POLICY_NXDOMAIN},
+		{"nodata",	DNS_RPZ_POLICY_NODATA},
+		{"cname",	DNS_RPZ_POLICY_CNAME},
+		{"no-op",	DNS_RPZ_POLICY_PASSTHRU},   /* Obsolete */
+	};
+	unsigned int n;
+
 	if (str == NULL)
 		return (DNS_RPZ_POLICY_ERROR);
-	if (!strcasecmp(str, "given"))
-		return (DNS_RPZ_POLICY_GIVEN);
-	if (!strcasecmp(str, "disabled"))
-		return (DNS_RPZ_POLICY_DISABLED);
-	if (!strcasecmp(str, "passthru"))
-		return (DNS_RPZ_POLICY_PASSTHRU);
-	if (!strcasecmp(str, "nxdomain"))
-		return (DNS_RPZ_POLICY_NXDOMAIN);
-	if (!strcasecmp(str, "nodata"))
-		return (DNS_RPZ_POLICY_NODATA);
-	if (!strcasecmp(str, "cname"))
-		return (DNS_RPZ_POLICY_CNAME);
-	/*
-	 * Obsolete
-	 */
-	if (!strcasecmp(str, "no-op"))
-		return (DNS_RPZ_POLICY_PASSTHRU);
+	for (n = 0; n < sizeof(tbl)/sizeof(tbl[0]); ++n) {
+		if (!strcasecmp(tbl[n].str, str))
+			return (tbl[n].policy);
+	}
 	return (DNS_RPZ_POLICY_ERROR);
 }
 
@@ -175,6 +228,9 @@
 	case DNS_RPZ_POLICY_PASSTHRU:
 		str = "PASSTHRU";
 		break;
+	case DNS_RPZ_POLICY_DROP:
+		str = "DROP";
+		break;
 	case DNS_RPZ_POLICY_NXDOMAIN:
 		str = "NXDOMAIN";
 		break;
@@ -196,243 +252,276 @@
 	return (str);
 }
 
-/*
- * Free the radix tree of a response policy database.
- */
-void
-dns_rpz_cidr_free(dns_rpz_cidr_t **cidrp) {
-	dns_rpz_cidr_node_t *cur, *child, *parent;
-	dns_rpz_cidr_t *cidr;
-
-	REQUIRE(cidrp != NULL);
-
-	cidr = *cidrp;
-	if (cidr == NULL)
-		return;
-
-	cur = cidr->root;
-	while (cur != NULL) {
-		/* Depth first. */
-		child = cur->child[0];
-		if (child != NULL) {
-			cur = child;
-			continue;
-		}
-		child = cur->child[1];
-		if (child != NULL) {
-			cur = child;
-			continue;
-		}
+static int
+zbit_to_num(dns_rpz_zbits_t zbit) {
+	dns_rpz_num_t rpz_num;
 
-		/* Delete this leaf and go up. */
-		parent = cur->parent;
-		if (parent == NULL)
-			cidr->root = NULL;
-		else
-			parent->child[parent->child[1] == cur] = NULL;
-		isc_mem_put(cidr->mctx, cur, sizeof(*cur));
-		cur = parent;
+	INSIST(zbit != 0);
+	rpz_num = 0;
+#if DNS_RPZ_MAX_ZONES > 32
+	if ((zbit & 0xffffffff00000000L) != 0) {
+		zbit >>= 32;
+		rpz_num += 32;
 	}
-
-	dns_name_free(&cidr->ip_name, cidr->mctx);
-	dns_name_free(&cidr->nsip_name, cidr->mctx);
-	dns_name_free(&cidr->nsdname_name, cidr->mctx);
-	isc_mem_put(cidr->mctx, cidr, sizeof(*cidr));
-	*cidrp = NULL;
+#endif
+	if ((zbit & 0xffff0000) != 0) {
+		zbit >>= 16;
+		rpz_num += 16;
+	}
+	if ((zbit & 0xff00) != 0) {
+		zbit >>= 8;
+		rpz_num += 8;
+	}
+	if ((zbit & 0xf0) != 0) {
+		zbit >>= 4;
+		rpz_num += 4;
+	}
+	if ((zbit & 0xc) != 0) {
+		zbit >>= 2;
+		rpz_num += 2;
+	}
+	if ((zbit & 2) != 0)
+		++rpz_num;
+	return (rpz_num);
 }
 
 /*
- * Forget a view's list of policy zones.
+ * Make a set of bit masks given one or more bits and their type.
  */
-void
-dns_rpz_view_destroy(dns_view_t *view) {
-	dns_rpz_zone_t *zone;
-
-	REQUIRE(view != NULL);
+static void
+make_addr_set(dns_rpz_addr_zbits_t *tgt_set, dns_rpz_zbits_t zbits,
+	      dns_rpz_type_t type)
+{
+	switch (type) {
+	case DNS_RPZ_TYPE_CLIENT_IP:
+		tgt_set->client_ip = zbits;
+		tgt_set->ip = 0;
+		tgt_set->nsip = 0;
+		break;
+	case DNS_RPZ_TYPE_IP:
+		tgt_set->client_ip = 0;
+		tgt_set->ip = zbits;
+		tgt_set->nsip = 0;
+		break;
+	case DNS_RPZ_TYPE_NSIP:
+		tgt_set->client_ip = 0;
+		tgt_set->ip = 0;
+		tgt_set->nsip = zbits;
+		break;
+	default:
+		INSIST(0);
+		break;
+	}
+}
 
-	while (!ISC_LIST_EMPTY(view->rpz_zones)) {
-		zone = ISC_LIST_HEAD(view->rpz_zones);
-		ISC_LIST_UNLINK(view->rpz_zones, zone, link);
-		if (dns_name_dynamic(&zone->origin))
-			dns_name_free(&zone->origin, view->mctx);
-		if (dns_name_dynamic(&zone->passthru))
-			dns_name_free(&zone->passthru, view->mctx);
-		if (dns_name_dynamic(&zone->nsdname))
-			dns_name_free(&zone->nsdname, view->mctx);
-		if (dns_name_dynamic(&zone->cname))
-			dns_name_free(&zone->cname, view->mctx);
-		isc_mem_put(view->mctx, zone, sizeof(*zone));
+static void
+make_nm_set(dns_rpz_nm_zbits_t *tgt_set,
+	    dns_rpz_num_t rpz_num, dns_rpz_type_t type)
+{
+	switch (type) {
+	case DNS_RPZ_TYPE_QNAME:
+		tgt_set->qname = DNS_RPZ_ZBIT(rpz_num);
+		tgt_set->ns = 0;
+		break;
+	case DNS_RPZ_TYPE_NSDNAME:
+		tgt_set->qname = 0;
+		tgt_set->ns = DNS_RPZ_ZBIT(rpz_num);
+		break;
+	default:
+		INSIST(0);
+		break;
 	}
 }
 
 /*
- * Start a new radix tree for a response policy zone.
+ * Mark a node and all of its parents as having client-IP, IP, or NSIP data
  */
-isc_result_t
-dns_rpz_new_cidr(isc_mem_t *mctx, dns_name_t *origin,
-		 dns_rpz_cidr_t **rbtdb_cidr)
-{
-	isc_result_t result;
-	dns_rpz_cidr_t *cidr;
-
-	REQUIRE(rbtdb_cidr != NULL && *rbtdb_cidr == NULL);
-
-	cidr = isc_mem_get(mctx, sizeof(*cidr));
-	if (cidr == NULL)
-		return (ISC_R_NOMEMORY);
-	memset(cidr, 0, sizeof(*cidr));
-	cidr->mctx = mctx;
+static void
+set_sum_pair(dns_rpz_cidr_node_t *cnode) {
+	dns_rpz_cidr_node_t *child;
+	dns_rpz_addr_zbits_t sum;
 
-	dns_name_init(&cidr->ip_name, NULL);
-	result = dns_name_fromstring2(&cidr->ip_name, DNS_RPZ_IP_ZONE, origin,
-				      DNS_NAME_DOWNCASE, mctx);
-	if (result != ISC_R_SUCCESS) {
-		isc_mem_put(mctx, cidr, sizeof(*cidr));
-		return (result);
-	}
+	do {
+		sum = cnode->set;
 
-	dns_name_init(&cidr->nsip_name, NULL);
-	result = dns_name_fromstring2(&cidr->nsip_name, DNS_RPZ_NSIP_ZONE,
-				      origin, DNS_NAME_DOWNCASE, mctx);
-	if (result != ISC_R_SUCCESS) {
-		dns_name_free(&cidr->ip_name, mctx);
-		isc_mem_put(mctx, cidr, sizeof(*cidr));
-		return (result);
-	}
+		child = cnode->child[0];
+		if (child != NULL) {
+			sum.client_ip |= child->sum.client_ip;
+			sum.ip |= child->sum.ip;
+			sum.nsip |= child->sum.nsip;
+		}
 
-	dns_name_init(&cidr->nsdname_name, NULL);
-	result = dns_name_fromstring2(&cidr->nsdname_name, DNS_RPZ_NSDNAME_ZONE,
-				      origin, DNS_NAME_DOWNCASE, mctx);
-	if (result != ISC_R_SUCCESS) {
-		dns_name_free(&cidr->nsip_name, mctx);
-		dns_name_free(&cidr->ip_name, mctx);
-		isc_mem_put(mctx, cidr, sizeof(*cidr));
-		return (result);
-	}
+		child = cnode->child[1];
+		if (child != NULL) {
+			sum.client_ip |= child->sum.client_ip;
+			sum.ip |= child->sum.ip;
+			sum.nsip |= child->sum.nsip;
+		}
 
-	*rbtdb_cidr = cidr;
-	return (ISC_R_SUCCESS);
+		if (cnode->sum.client_ip == sum.client_ip &&
+		    cnode->sum.ip == sum.ip &&
+		    cnode->sum.nsip == sum.nsip)
+			break;
+		cnode->sum = sum;
+		cnode = cnode->parent;
+	} while (cnode != NULL);
 }
 
-/*
- * See if a policy zone has IP, NSIP, or NSDNAME rules or records.
- */
-void
-dns_rpz_enabled_get(dns_rpz_cidr_t *cidr, dns_rpz_st_t *st) {
-	if (cidr == NULL)
-		return;
-	if (cidr->root != NULL &&
-	    (cidr->root->flags & DNS_RPZ_CIDR_FG_IP) != 0)
-		st->state |= DNS_RPZ_HAVE_IP;
-	if (cidr->root != NULL &&
-	    (cidr->root->flags & DNS_RPZ_CIDR_FG_NSIPv4) != 0)
-		st->state |= DNS_RPZ_HAVE_NSIPv4;
-	if (cidr->root != NULL &&
-	    (cidr->root->flags & DNS_RPZ_CIDR_FG_NSIPv6) != 0)
-		st->state |= DNS_RPZ_HAVE_NSIPv6;
-	if (cidr->have_nsdname)
-		st->state |= DNS_RPZ_HAVE_NSDNAME;
-}
-
-static inline dns_rpz_cidr_flags_t
-get_flags(const dns_rpz_cidr_key_t *ip, dns_rpz_cidr_bits_t prefix,
-	dns_rpz_type_t rpz_type)
-{
-	if (rpz_type == DNS_RPZ_TYPE_NSIP) {
-		if (prefix >= 96 &&
-		    ip->w[0] == 0 && ip->w[1] == 0 &&
-		    ip->w[2] == ADDR_V4MAPPED)
-			return (DNS_RPZ_CIDR_FG_NSIP_DATA |
-				DNS_RPZ_CIDR_FG_NSIPv4);
-		else
-			return (DNS_RPZ_CIDR_FG_NSIP_DATA |
-				DNS_RPZ_CIDR_FG_NSIPv6);
+static void
+fix_qname_skip_recurse(dns_rpz_zones_t *rpzs) {
+	dns_rpz_zbits_t zbits;
+
+	/*
+	 * Get a mask covering all policy zones that are not subordinate to
+	 * other policy zones containing triggers that require that the
+	 * qname be resolved before they can be checked.
+	 */
+	if (rpzs->p.qname_wait_recurse) {
+		zbits = 0;
 	} else {
-		return (DNS_RPZ_CIDR_FG_IP | DNS_RPZ_CIDR_FG_IP_DATA);
+		zbits = (rpzs->have.ipv4 || rpzs->have.ipv6 ||
+			 rpzs->have.nsdname ||
+			 rpzs->have.nsipv4 || rpzs->have.nsipv6);
+		if (zbits == 0) {
+			zbits = DNS_RPZ_ALL_ZBITS;
+		} else {
+			zbits = DNS_RPZ_ZMASK(zbit_to_num(zbits));
+		}
 	}
+	rpzs->have.qname_skip_recurse = zbits;
+
+	rpzs->have.client_ip = rpzs->have.client_ipv4 | rpzs->have.client_ipv6;
+	rpzs->have.ip = rpzs->have.ipv4 | rpzs->have.ipv6;
+	rpzs->have.nsip = rpzs->have.nsipv4 | rpzs->have.nsipv6;
 }
 
-/*
- * Mark a node as having IP or NSIP data and all of its parents
- * as members of the IP or NSIP tree.
- */
 static void
-set_node_flags(dns_rpz_cidr_node_t *node, dns_rpz_type_t rpz_type) {
-	dns_rpz_cidr_flags_t flags;
+adj_trigger_cnt(dns_rpz_zones_t *rpzs, dns_rpz_num_t rpz_num,
+		dns_rpz_type_t rpz_type,
+		const dns_rpz_cidr_key_t *tgt_ip, dns_rpz_prefix_t tgt_prefix,
+		isc_boolean_t inc)
+{
+	dns_rpz_zone_t *rpz;
+	int *cnt;
+	dns_rpz_zbits_t *have;
+
+	rpz = rpzs->zones[rpz_num];
+	switch (rpz_type) {
+	case DNS_RPZ_TYPE_CLIENT_IP:
+		REQUIRE(tgt_ip != NULL);
+		if (KEY_IS_IPV4(tgt_prefix, tgt_ip)) {
+			cnt = &rpz->triggers.client_ipv4;
+			have = &rpzs->have.client_ipv4;
+		} else {
+			cnt = &rpz->triggers.client_ipv6;
+			have = &rpzs->have.client_ipv6;
+		}
+		break;
+	case DNS_RPZ_TYPE_QNAME:
+		cnt = &rpz->triggers.qname;
+		have = &rpzs->have.qname;
+		break;
+	case DNS_RPZ_TYPE_IP:
+		REQUIRE(tgt_ip != NULL);
+		if (KEY_IS_IPV4(tgt_prefix, tgt_ip)) {
+			cnt = &rpz->triggers.ipv4;
+			have = &rpzs->have.ipv4;
+		} else {
+			cnt = &rpz->triggers.ipv6;
+			have = &rpzs->have.ipv6;
+		}
+		break;
+	case DNS_RPZ_TYPE_NSDNAME:
+		cnt = &rpz->triggers.nsdname;
+		have = &rpzs->have.nsdname;
+		break;
+	case DNS_RPZ_TYPE_NSIP:
+		REQUIRE(tgt_ip != NULL);
+		if (KEY_IS_IPV4(tgt_prefix, tgt_ip)) {
+			cnt = &rpz->triggers.nsipv4;
+			have = &rpzs->have.nsipv4;
+		} else {
+			cnt = &rpz->triggers.nsipv6;
+			have = &rpzs->have.nsipv6;
+		}
+		break;
+	default:
+		INSIST(0);
+	}
 
-	flags = get_flags(&node->ip, node->bits, rpz_type);
-	node->flags |= flags;
-	flags &= ~(DNS_RPZ_CIDR_FG_NSIP_DATA | DNS_RPZ_CIDR_FG_IP_DATA);
-	for (;;) {
-		node = node->parent;
-		if (node == NULL)
-			return;
-		node->flags |= flags;
+	if (inc) {
+		if (++*cnt == 1) {
+			*have |= DNS_RPZ_ZBIT(rpz_num);
+			fix_qname_skip_recurse(rpzs);
+		}
+	} else {
+		REQUIRE(*cnt > 0);
+		if (--*cnt == 0) {
+			*have &= ~DNS_RPZ_ZBIT(rpz_num);
+			fix_qname_skip_recurse(rpzs);
+		}
 	}
 }
 
-/*
- * Make a radix tree node.
- */
 static dns_rpz_cidr_node_t *
-new_node(dns_rpz_cidr_t *cidr, const dns_rpz_cidr_key_t *ip,
-	 dns_rpz_cidr_bits_t bits, dns_rpz_cidr_flags_t flags)
+new_node(dns_rpz_zones_t *rpzs,
+	 const dns_rpz_cidr_key_t *ip, dns_rpz_prefix_t prefix,
+	 const dns_rpz_cidr_node_t *child)
 {
-	dns_rpz_cidr_node_t *node;
+	dns_rpz_cidr_node_t *new;
 	int i, words, wlen;
 
-	node = isc_mem_get(cidr->mctx, sizeof(*node));
-	if (node == NULL)
+	new = isc_mem_get(rpzs->mctx, sizeof(*new));
+	if (new == NULL)
 		return (NULL);
-	memset(node, 0, sizeof(*node));
+	memset(new, 0, sizeof(*new));
 
-	node->flags = flags & ~(DNS_RPZ_CIDR_FG_IP_DATA |
-				DNS_RPZ_CIDR_FG_NSIP_DATA);
+	if (child != NULL)
+		new->sum = child->sum;
 
-	node->bits = bits;
-	words = bits / DNS_RPZ_CIDR_WORD_BITS;
-	wlen = bits % DNS_RPZ_CIDR_WORD_BITS;
+	new->prefix = prefix;
+	words = prefix / DNS_RPZ_CIDR_WORD_BITS;
+	wlen = prefix % DNS_RPZ_CIDR_WORD_BITS;
 	i = 0;
 	while (i < words) {
-		node->ip.w[i] = ip->w[i];
+		new->ip.w[i] = ip->w[i];
 		++i;
 	}
 	if (wlen != 0) {
-		node->ip.w[i] = ip->w[i] & DNS_RPZ_WORD_MASK(wlen);
+		new->ip.w[i] = ip->w[i] & DNS_RPZ_WORD_MASK(wlen);
 		++i;
 	}
 	while (i < DNS_RPZ_CIDR_WORDS)
-		node->ip.w[i++] = 0;
+		new->ip.w[i++] = 0;
 
-	return (node);
+	return (new);
 }
 
 static void
 badname(int level, dns_name_t *name, const char *str1, const char *str2) {
-	char printname[DNS_NAME_FORMATSIZE];
+	char namebuf[DNS_NAME_FORMATSIZE];
 
 	/*
 	 * bin/tests/system/rpz/tests.sh looks for "invalid rpz".
 	 */
-	if (level < DNS_RPZ_DEBUG_QUIET
-	    && isc_log_wouldlog(dns_lctx, level)) {
-		dns_name_format(name, printname, sizeof(printname));
+	if (level < DNS_RPZ_DEBUG_QUIET &&
+	    isc_log_wouldlog(dns_lctx, level)) {
+		dns_name_format(name, namebuf, sizeof(namebuf));
 		isc_log_write(dns_lctx, DNS_LOGCATEGORY_RPZ,
 			      DNS_LOGMODULE_RBTDB, level,
 			      "invalid rpz IP address \"%s\"%s%s",
-			      printname, str1, str2);
+			      namebuf, str1, str2);
 	}
 }
 
 /*
  * Convert an IP address from radix tree binary (host byte order) to
- * to its canonical response policy domain name and its name in the
+ * to its canonical response policy domain name without the origin of the
  * policy zone.
  */
 static isc_result_t
-ip2name(dns_rpz_cidr_t *cidr, const dns_rpz_cidr_key_t *tgt_ip,
-	dns_rpz_cidr_bits_t tgt_prefix, dns_rpz_type_t type,
-	dns_name_t *canon_name, dns_name_t *search_name)
+ip2name(const dns_rpz_cidr_key_t *tgt_ip, dns_rpz_prefix_t tgt_prefix,
+	dns_name_t *base_name, dns_name_t *ip_name)
 {
 #ifndef INET6_ADDRSTRLEN
 #define INET6_ADDRSTRLEN 46
@@ -440,22 +529,18 @@
 	int w[DNS_RPZ_CIDR_WORDS*2];
 	char str[1+8+1+INET6_ADDRSTRLEN+1];
 	isc_buffer_t buffer;
-	dns_name_t *name;
 	isc_result_t result;
 	isc_boolean_t zeros;
 	int i, n, len;
 
-	if (tgt_prefix > 96 &&
-	    tgt_ip->w[0] == 0 &&
-	    tgt_ip->w[1] == 0 &&
-	    tgt_ip->w[2] == ADDR_V4MAPPED) {
+	if (KEY_IS_IPV4(tgt_prefix, tgt_ip)) {
 		len = snprintf(str, sizeof(str), "%d.%d.%d.%d.%d",
 			       tgt_prefix - 96,
 			       tgt_ip->w[3] & 0xff,
 			       (tgt_ip->w[3]>>8) & 0xff,
 			       (tgt_ip->w[3]>>16) & 0xff,
 			       (tgt_ip->w[3]>>24) & 0xff);
-		if (len == -1 || len > (int)sizeof(str))
+		if (len < 0 || len > (int)sizeof(str))
 			return (ISC_R_FAILURE);
 	} else {
 		for (i = 0; i < DNS_RPZ_CIDR_WORDS; i++) {
@@ -469,9 +554,9 @@
 			return (ISC_R_FAILURE);
 		i = 0;
 		while (i < DNS_RPZ_CIDR_WORDS * 2) {
-			if (w[i] != 0 || zeros
-			    || i >= DNS_RPZ_CIDR_WORDS * 2 - 1
-			    || w[i+1] != 0) {
+			if (w[i] != 0 || zeros ||
+			    i >= DNS_RPZ_CIDR_WORDS * 2 - 1 ||
+			    w[i+1] != 0) {
 				INSIST((size_t)len <= sizeof(str));
 				n = snprintf(&str[len], sizeof(str) - len,
 					     ".%x", w[i++]);
@@ -495,48 +580,31 @@
 		}
 	}
 
-	if (canon_name != NULL) {
-		isc__buffer_init(&buffer, str, sizeof(str));
-		isc__buffer_add(&buffer, len);
-		result = dns_name_fromtext(canon_name, &buffer,
-					   dns_rootname, 0, NULL);
-		if (result != ISC_R_SUCCESS)
-			return (result);
-	}
-	if (search_name != NULL) {
-		isc__buffer_init(&buffer, str, sizeof(str));
-		isc__buffer_add(&buffer, len);
-		if (type == DNS_RPZ_TYPE_NSIP)
-			name = &cidr->nsip_name;
-		else
-			name = &cidr->ip_name;
-		result = dns_name_fromtext(search_name, &buffer, name, 0, NULL);
-		if (result != ISC_R_SUCCESS)
-			return (result);
-	}
-	return (ISC_R_SUCCESS);
+	isc__buffer_init(&buffer, str, sizeof(str));
+	isc__buffer_add(&buffer, len);
+	result = dns_name_fromtext(ip_name, &buffer, base_name, 0, NULL);
+	return (result);
 }
 
 /*
- * Decide which kind of IP address response policy zone a name is in.
+ * Determine the type a of a name in a response policy zone.
  */
 static dns_rpz_type_t
-set_type(dns_rpz_cidr_t *cidr, dns_name_t *name) {
+type_from_name(dns_rpz_zone_t *rpz, dns_name_t *name) {
 
-	if (dns_name_issubdomain(name, &cidr->ip_name))
+	if (dns_name_issubdomain(name, &rpz->ip))
 		return (DNS_RPZ_TYPE_IP);
 
-	/*
-	 * Require `./configure --enable-rpz-nsip` and nsdname
-	 * until consistency problems are resolved.
-	 */
+	if (dns_name_issubdomain(name, &rpz->client_ip))
+		return (DNS_RPZ_TYPE_CLIENT_IP);
+
 #ifdef ENABLE_RPZ_NSIP
-	if (dns_name_issubdomain(name, &cidr->nsip_name))
+	if (dns_name_issubdomain(name, &rpz->nsip))
 		return (DNS_RPZ_TYPE_NSIP);
 #endif
 
 #ifdef ENABLE_RPZ_NSDNAME
-	if (dns_name_issubdomain(name, &cidr->nsdname_name))
+	if (dns_name_issubdomain(name, &rpz->nsdname))
 		return (DNS_RPZ_TYPE_NSDNAME);
 #endif
 
@@ -545,73 +613,80 @@
 
 /*
  * Convert an IP address from canonical response policy domain name form
- * to radix tree binary (host byte order).
+ * to radix tree binary (host byte order) for adding or deleting IP or NSIP
+ * data.
  */
 static isc_result_t
-name2ipkey(dns_rpz_cidr_t *cidr, int level, dns_name_t *src_name,
-	   dns_rpz_type_t type, dns_rpz_cidr_key_t *tgt_ip,
-	   dns_rpz_cidr_bits_t *tgt_prefix)
+name2ipkey(int log_level,
+	   const dns_rpz_zones_t *rpzs, dns_rpz_num_t rpz_num,
+	   dns_rpz_type_t rpz_type, dns_name_t *src_name,
+	   dns_rpz_cidr_key_t *tgt_ip, dns_rpz_prefix_t *tgt_prefix,
+	   dns_rpz_addr_zbits_t *new_set)
 {
-	isc_result_t result;
-	dns_fixedname_t fname;
-	dns_name_t *ipname;
-	char ipstr[DNS_NAME_FORMATSIZE];
+	dns_rpz_zone_t *rpz;
+	char ip_str[DNS_NAME_FORMATSIZE];
+	dns_offsets_t ip_name_offsets;
+	dns_fixedname_t ip_name2f;
+	dns_name_t ip_name, *ip_name2;
 	const char *prefix_str, *cp, *end;
 	char *cp2;
 	int ip_labels;
-	dns_rpz_cidr_bits_t bits;
-	unsigned long prefix, l;
+	dns_rpz_prefix_t prefix;
+	unsigned long prefix_num, l;
+	isc_result_t result;
 	int i;
 
-	/*
-	 * Need at least enough labels for the shortest name,
-	 * :: or 128.*.RPZ_x_ZONE.rpz.LOCALHOST.
-	 */
+	REQUIRE(rpzs != NULL && rpz_num < rpzs->p.num_zones);
+	rpz = rpzs->zones[rpz_num];
+	REQUIRE(rpz != NULL);
+
+	make_addr_set(new_set, DNS_RPZ_ZBIT(rpz_num), rpz_type);
+
 	ip_labels = dns_name_countlabels(src_name);
-	ip_labels -= dns_name_countlabels(&cidr->ip_name);
-	ip_labels--;
-	if (ip_labels < 1) {
-		badname(level, src_name, "; too short", "");
+	if (rpz_type == DNS_RPZ_TYPE_QNAME)
+		ip_labels -= dns_name_countlabels(&rpz->origin);
+	else
+		ip_labels -= dns_name_countlabels(&rpz->nsdname);
+	if (ip_labels < 2) {
+		badname(log_level, src_name, "; too short", "");
 		return (ISC_R_FAILURE);
 	}
+	dns_name_init(&ip_name, ip_name_offsets);
+	dns_name_getlabelsequence(src_name, 0, ip_labels, &ip_name);
 
 	/*
 	 * Get text for the IP address
 	 */
-	dns_fixedname_init(&fname);
-	ipname = dns_fixedname_name(&fname);
-	dns_name_split(src_name, dns_name_countlabels(&cidr->ip_name),
-		       ipname, NULL);
-	dns_name_format(ipname, ipstr, sizeof(ipstr));
-	end = &ipstr[strlen(ipstr)+1];
-	prefix_str = ipstr;
+	dns_name_format(&ip_name, ip_str, sizeof(ip_str));
+	end = &ip_str[strlen(ip_str)+1];
+	prefix_str = ip_str;
 
-	prefix = strtoul(prefix_str, &cp2, 10);
+	prefix_num = strtoul(prefix_str, &cp2, 10);
 	if (*cp2 != '.') {
-		badname(level, src_name,
+		badname(log_level, src_name,
 			"; invalid leading prefix length", "");
 		return (ISC_R_FAILURE);
 	}
 	*cp2 = '\0';
-	if (prefix < 1U || prefix > 128U) {
-		badname(level, src_name,
+	if (prefix_num < 1U || prefix_num > 128U) {
+		badname(log_level, src_name,
 			"; invalid prefix length of ", prefix_str);
 		return (ISC_R_FAILURE);
 	}
 	cp = cp2+1;
 
-	if (ip_labels == 4 && !strchr(cp, 'z')) {
+	if (--ip_labels == 4 && !strchr(cp, 'z')) {
 		/*
 		 * Convert an IPv4 address
 		 * from the form "prefix.w.z.y.x"
 		 */
-		if (prefix > 32U) {
-			badname(level, src_name,
+		if (prefix_num > 32U) {
+			badname(log_level, src_name,
 				"; invalid IPv4 prefix length of ", prefix_str);
 			return (ISC_R_FAILURE);
 		}
-		prefix += 96;
-		*tgt_prefix = (dns_rpz_cidr_bits_t)prefix;
+		prefix_num += 96;
+		*tgt_prefix = (dns_rpz_prefix_t)prefix_num;
 		tgt_ip->w[0] = 0;
 		tgt_ip->w[1] = 0;
 		tgt_ip->w[2] = ADDR_V4MAPPED;
@@ -621,7 +696,7 @@
 			if (l > 255U || (*cp2 != '.' && *cp2 != '\0')) {
 				if (*cp2 == '.')
 					*cp2 = '\0';
-				badname(level, src_name,
+				badname(log_level, src_name,
 					"; invalid IPv4 octet ", cp);
 				return (ISC_R_FAILURE);
 			}
@@ -632,7 +707,7 @@
 		/*
 		 * Convert a text IPv6 address.
 		 */
-		*tgt_prefix = (dns_rpz_cidr_bits_t)prefix;
+		*tgt_prefix = (dns_rpz_prefix_t)prefix_num;
 		for (i = 0;
 		     ip_labels > 0 && i < DNS_RPZ_CIDR_WORDS * 2;
 		     ip_labels--) {
@@ -651,7 +726,7 @@
 				    (*cp2 != '.' && *cp2 != '\0')) {
 					if (*cp2 == '.')
 					    *cp2 = '\0';
-					badname(level, src_name,
+					badname(log_level, src_name,
 						"; invalid IPv6 word ", cp);
 					return (ISC_R_FAILURE);
 				}
@@ -665,36 +740,37 @@
 		}
 	}
 	if (cp != end) {
-		badname(level, src_name, "", "");
+		badname(log_level, src_name, "", "");
 		return (ISC_R_FAILURE);
 	}
 
 	/*
 	 * Check for 1s after the prefix length.
 	 */
-	bits = (dns_rpz_cidr_bits_t)prefix;
-	while (bits < DNS_RPZ_CIDR_KEY_BITS) {
+	prefix = (dns_rpz_prefix_t)prefix_num;
+	while (prefix < DNS_RPZ_CIDR_KEY_BITS) {
 		dns_rpz_cidr_word_t aword;
 
-		i = bits % DNS_RPZ_CIDR_WORD_BITS;
-		aword = tgt_ip->w[bits / DNS_RPZ_CIDR_WORD_BITS];
+		i = prefix % DNS_RPZ_CIDR_WORD_BITS;
+		aword = tgt_ip->w[prefix / DNS_RPZ_CIDR_WORD_BITS];
 		if ((aword & ~DNS_RPZ_WORD_MASK(i)) != 0) {
-			badname(level, src_name,
+			badname(log_level, src_name,
 				"; too small prefix length of ", prefix_str);
 			return (ISC_R_FAILURE);
 		}
-		bits -= i;
-		bits += DNS_RPZ_CIDR_WORD_BITS;
+		prefix -= i;
+		prefix += DNS_RPZ_CIDR_WORD_BITS;
 	}
 
 	/*
-	 * Convert the address back to a canonical policy domain name
-	 * to ensure that it is in canonical form.
+	 * Convert the address back to a canonical domain name
+	 * to ensure that the original name is in canonical form.
 	 */
-	result = ip2name(cidr, tgt_ip, (dns_rpz_cidr_bits_t) prefix,
-			 type, NULL, ipname);
-	if (result != ISC_R_SUCCESS || !dns_name_equal(src_name, ipname)) {
-		badname(level, src_name, "; not canonical", "");
+	dns_fixedname_init(&ip_name2f);
+	ip_name2 = dns_fixedname_name(&ip_name2f);
+	result = ip2name(tgt_ip, (dns_rpz_prefix_t)prefix_num, NULL, ip_name2);
+	if (result != ISC_R_SUCCESS || !dns_name_equal(&ip_name, ip_name2)) {
+		badname(log_level, src_name, "; not canonical", "");
 		return (ISC_R_FAILURE);
 	}
 
@@ -702,10 +778,54 @@
 }
 
 /*
- * Find first differing bit.
+ * Get trigger name and data bits for adding or deleting summary NSDNAME
+ * or QNAME data.
  */
-static int
-ffbit(dns_rpz_cidr_word_t w) {
+static void
+name2data(dns_rpz_zones_t *rpzs, dns_rpz_num_t rpz_num,
+	  dns_rpz_type_t rpz_type, const dns_name_t *src_name,
+	  dns_name_t *trig_name, dns_rpz_nm_data_t *new_data)
+{
+	dns_rpz_zone_t *rpz;
+	dns_offsets_t tmp_name_offsets;
+	dns_name_t tmp_name;
+	unsigned int prefix_len, n;
+
+	REQUIRE(rpzs != NULL && rpz_num < rpzs->p.num_zones);
+	rpz = rpzs->zones[rpz_num];
+	REQUIRE(rpz != NULL);
+
+	/*
+	 * Handle wildcards by putting only the parent into the
+	 * summary RBT.  The summary database only causes a check of the
+	 * real policy zone where wildcards will be handled.
+	 */
+	if (dns_name_iswildcard(src_name)) {
+		prefix_len = 1;
+		memset(&new_data->set, 0, sizeof(new_data->set));
+		make_nm_set(&new_data->wild, rpz_num, rpz_type);
+	} else {
+		prefix_len = 0;
+		make_nm_set(&new_data->set, rpz_num, rpz_type);
+		memset(&new_data->wild, 0, sizeof(new_data->wild));
+	}
+
+	dns_name_init(&tmp_name, tmp_name_offsets);
+	n = dns_name_countlabels(src_name);
+	n -= prefix_len;
+	if (rpz_type == DNS_RPZ_TYPE_QNAME)
+		n -= dns_name_countlabels(&rpz->origin);
+	else
+		n -= dns_name_countlabels(&rpz->nsdname);
+	dns_name_getlabelsequence(src_name, prefix_len, n, &tmp_name);
+	(void)dns_name_concatenate(&tmp_name, dns_rootname, trig_name, NULL);
+}
+
+/*
+ * Find the first differing bit in a key (IP address) word.
+ */
+static inline int
+ffs_keybit(dns_rpz_cidr_word_t w) {
 	int bit;
 
 	bit = DNS_RPZ_CIDR_WORD_BITS-1;
@@ -731,17 +851,17 @@
 }
 
 /*
- * Find the first differing bit in two keys.
+ * Find the first differing bit in two keys (IP addresses).
  */
 static int
-diff_keys(const dns_rpz_cidr_key_t *key1, dns_rpz_cidr_bits_t bits1,
-	  const dns_rpz_cidr_key_t *key2, dns_rpz_cidr_bits_t bits2)
+diff_keys(const dns_rpz_cidr_key_t *key1, dns_rpz_prefix_t prefix1,
+	  const dns_rpz_cidr_key_t *key2, dns_rpz_prefix_t prefix2)
 {
 	dns_rpz_cidr_word_t delta;
-	dns_rpz_cidr_bits_t maxbit, bit;
+	dns_rpz_prefix_t maxbit, bit;
 	int i;
 
-	maxbit = ISC_MIN(bits1, bits2);
+	maxbit = ISC_MIN(prefix1, prefix2);
 
 	/*
 	 * find the first differing words
@@ -751,7 +871,7 @@
 	     i++, bit += DNS_RPZ_CIDR_WORD_BITS) {
 		delta = key1->w[i] ^ key2->w[i];
 		if (delta != 0) {
-			bit += ffbit(delta);
+			bit += ffs_keybit(delta);
 			break;
 		}
 	}
@@ -759,133 +879,170 @@
 }
 
 /*
+ * Given a hit while searching the radix trees,
+ * clear all bits for higher numbered zones.
+ */
+static inline dns_rpz_zbits_t
+trim_zbits(dns_rpz_zbits_t zbits, dns_rpz_zbits_t found) {
+	dns_rpz_zbits_t x;
+
+	/*
+	 * Isolate the first or smallest numbered hit bit.
+	 * Make a mask of that bit and all smaller numbered bits.
+	 */
+	x = zbits & found;
+	x &= (~x + 1);
+	x = (x << 1) - 1;
+	return (zbits &= x);
+}
+
+/*
  * Search a radix tree for an IP address for ordinary lookup
  *	or for a CIDR block adding or deleting an entry
- * The tree read (for simple search) or write lock must be held by the caller.
  *
- * Return ISC_R_SUCCESS, ISC_R_NOTFOUND, DNS_R_PARTIALMATCH, ISC_R_EXISTS,
- *	ISC_R_NOMEMORY
+ * Return ISC_R_SUCCESS, DNS_R_PARTIALMATCH, ISC_R_NOTFOUND,
+ *	    and *found=longest match node
+ *	or with create==ISC_TRUE, ISC_R_EXISTS or ISC_R_NOMEMORY
  */
 static isc_result_t
-search(dns_rpz_cidr_t *cidr, const dns_rpz_cidr_key_t *tgt_ip,
-       dns_rpz_cidr_bits_t tgt_prefix, dns_rpz_type_t type,
-       isc_boolean_t create,
-       dns_rpz_cidr_node_t **found)		/* NULL or longest match node */
+search(dns_rpz_zones_t *rpzs,
+       const dns_rpz_cidr_key_t *tgt_ip, dns_rpz_prefix_t tgt_prefix,
+       const dns_rpz_addr_zbits_t *tgt_set, isc_boolean_t create,
+       dns_rpz_cidr_node_t **found)
 {
 	dns_rpz_cidr_node_t *cur, *parent, *child, *new_parent, *sibling;
+	dns_rpz_addr_zbits_t set;
 	int cur_num, child_num;
-	dns_rpz_cidr_bits_t dbit;
-	dns_rpz_cidr_flags_t flags, data_flag;
+	dns_rpz_prefix_t dbit;
 	isc_result_t find_result;
 
-	flags = get_flags(tgt_ip, tgt_prefix, type);
-	data_flag = flags & (DNS_RPZ_CIDR_FG_IP_DATA |
-			     DNS_RPZ_CIDR_FG_NSIP_DATA);
-
+	set = *tgt_set;
 	find_result = ISC_R_NOTFOUND;
-	if (found != NULL)
-		*found = NULL;
-	cur = cidr->root;
+	*found = NULL;
+	cur = rpzs->cidr;
 	parent = NULL;
 	cur_num = 0;
 	for (;;) {
 		if (cur == NULL) {
 			/*
-			 * No child so we cannot go down.  Fail or
-			 * add the target as a child of the current parent.
+			 * No child so we cannot go down.
+			 * Quit with whatever we already found
+			 * or add the target as a child of the current parent.
 			 */
 			if (!create)
 				return (find_result);
-			child = new_node(cidr, tgt_ip, tgt_prefix, 0);
+			child = new_node(rpzs, tgt_ip, tgt_prefix, NULL);
 			if (child == NULL)
 				return (ISC_R_NOMEMORY);
 			if (parent == NULL)
-				cidr->root = child;
+				rpzs->cidr = child;
 			else
 				parent->child[cur_num] = child;
 			child->parent = parent;
-			set_node_flags(child, type);
-			if (found != NULL)
-				*found = cur;
+			child->set.client_ip |= tgt_set->client_ip;
+			child->set.ip |= tgt_set->ip;
+			child->set.nsip |= tgt_set->nsip;
+			set_sum_pair(child);
+			*found = cur;
 			return (ISC_R_SUCCESS);
 		}
 
-		/*
-		 * Pretend a node not in the correct tree does not exist
-		 * if we are not adding to the tree,
-		 * If we are adding, then continue down to eventually
-		 * add a node and mark/put this node in the correct tree.
-		 */
-		if ((cur->flags & flags) == 0 && !create)
-			return (find_result);
+		if ((cur->sum.client_ip & set.client_ip) == 0 &&
+		    (cur->sum.ip & set.ip) == 0 &&
+		    (cur->sum.nsip & set.nsip) == 0) {
+			/*
+			 * This node has no relevant data
+			 * and is in none of the target trees.
+			 * Pretend it does not exist if we are not adding.
+			 *
+			 * If we are adding, continue down to eventually add
+			 * a node and mark/put this node in the correct tree.
+			 */
+			if (!create)
+				return (find_result);
+		}
 
-		dbit = diff_keys(tgt_ip, tgt_prefix, &cur->ip, cur->bits);
+		dbit = diff_keys(tgt_ip, tgt_prefix, &cur->ip, cur->prefix);
 		/*
-		 * dbit <= tgt_prefix and dbit <= cur->bits always.
+		 * dbit <= tgt_prefix and dbit <= cur->prefix always.
 		 * We are finished searching if we matched all of the target.
 		 */
 		if (dbit == tgt_prefix) {
-			if (tgt_prefix == cur->bits) {
+			if (tgt_prefix == cur->prefix) {
 				/*
-				 * The current node matches the target exactly.
-				 * It is the answer if it has data.
+				 * The node's key matches the target exactly.
 				 */
-				if ((cur->flags & data_flag) != 0) {
-					if (create)
-						return (ISC_R_EXISTS);
-					if (found != NULL)
-						*found = cur;
-					return (ISC_R_SUCCESS);
+				if ((cur->set.client_ip & set.client_ip) != 0 ||
+				    (cur->set.ip & set.ip) != 0 ||
+				    (cur->set.nsip & set.nsip) != 0) {
+					/*
+					 * It is the answer if it has data.
+					 */
+					*found = cur;
+					if (create) {
+					    find_result = ISC_R_EXISTS;
+					} else {
+					    find_result = ISC_R_SUCCESS;
+					}
 				} else if (create) {
 					/*
-					 * The node had no data but does now.
+					 * The node lacked relevant data,
+					 * but will have it now.
 					 */
-					set_node_flags(cur, type);
-					if (found != NULL)
-						*found = cur;
-					return (ISC_R_SUCCESS);
+					cur->set.client_ip |= tgt_set->client_ip;
+					cur->set.ip |= tgt_set->ip;
+					cur->set.nsip |= tgt_set->nsip;
+					set_sum_pair(cur);
+					*found = cur;
+					find_result = ISC_R_SUCCESS;
 				}
 				return (find_result);
 			}
 
 			/*
-			 * We know tgt_prefix < cur_bits which means that
+			 * We know tgt_prefix < cur->prefix which means that
 			 * the target is shorter than the current node.
 			 * Add the target as the current node's parent.
 			 */
 			if (!create)
 				return (find_result);
 
-			new_parent = new_node(cidr, tgt_ip, tgt_prefix,
-					      cur->flags);
+			new_parent = new_node(rpzs, tgt_ip, tgt_prefix, cur);
 			if (new_parent == NULL)
 				return (ISC_R_NOMEMORY);
 			new_parent->parent = parent;
 			if (parent == NULL)
-				cidr->root = new_parent;
+				rpzs->cidr = new_parent;
 			else
 				parent->child[cur_num] = new_parent;
 			child_num = DNS_RPZ_IP_BIT(&cur->ip, tgt_prefix+1);
 			new_parent->child[child_num] = cur;
 			cur->parent = new_parent;
-			set_node_flags(new_parent, type);
-			if (found != NULL)
-				*found = new_parent;
+			new_parent->set = *tgt_set;
+			set_sum_pair(new_parent);
+			*found = new_parent;
 			return (ISC_R_SUCCESS);
 		}
 
-		if (dbit == cur->bits) {
-			/*
-			 * We have a partial match by matching of all of the
-			 * current node but only part of the target.
-			 * Try to go down.
-			 */
-			if ((cur->flags & data_flag) != 0) {
+		if (dbit == cur->prefix) {
+			if ((cur->set.client_ip & set.client_ip) != 0 ||
+			    (cur->set.ip & set.ip) != 0 ||
+			    (cur->set.nsip & set.nsip) != 0) {
+				/*
+				 * We have a partial match between of all of the
+				 * current node but only part of the target.
+				 * Continue searching for other hits in the
+				 * same or lower numbered trees.
+				 */
 				find_result = DNS_R_PARTIALMATCH;
-				if (found != NULL)
-					*found = cur;
+				*found = cur;
+				set.client_ip = trim_zbits(set.ip,
+							cur->set.client_ip);
+				set.ip = trim_zbits(set.ip,
+						    cur->set.ip);
+				set.nsip = trim_zbits(set.nsip,
+						      cur->set.nsip);
 			}
-
 			parent = cur;
 			cur_num = DNS_RPZ_IP_BIT(tgt_ip, dbit);
 			cur = cur->child[cur_num];
@@ -894,7 +1051,7 @@
 
 
 		/*
-		 * dbit < tgt_prefix and dbit < cur->bits,
+		 * dbit < tgt_prefix and dbit < cur->prefix,
 		 * so we failed to match both the target and the current node.
 		 * Insert a fork of a parent above the current node and
 		 * add the target as a sibling of the current node
@@ -902,17 +1059,17 @@
 		if (!create)
 			return (find_result);
 
-		sibling = new_node(cidr, tgt_ip, tgt_prefix, 0);
+		sibling = new_node(rpzs, tgt_ip, tgt_prefix, NULL);
 		if (sibling == NULL)
 			return (ISC_R_NOMEMORY);
-		new_parent = new_node(cidr, tgt_ip, dbit, cur->flags);
+		new_parent = new_node(rpzs, tgt_ip, dbit, cur);
 		if (new_parent == NULL) {
-			isc_mem_put(cidr->mctx, sibling, sizeof(*sibling));
+			isc_mem_put(rpzs->mctx, sibling, sizeof(*sibling));
 			return (ISC_R_NOMEMORY);
 		}
 		new_parent->parent = parent;
 		if (parent == NULL)
-			cidr->root = new_parent;
+			rpzs->cidr = new_parent;
 		else
 			parent->child[cur_num] = new_parent;
 		child_num = DNS_RPZ_IP_BIT(tgt_ip, dbit);
@@ -920,129 +1077,675 @@
 		new_parent->child[1-child_num] = cur;
 		cur->parent = new_parent;
 		sibling->parent = new_parent;
-		set_node_flags(sibling, type);
-		if (found != NULL)
-			*found = sibling;
+		sibling->set = *tgt_set;
+		set_sum_pair(sibling);
+		*found = sibling;
 		return (ISC_R_SUCCESS);
 	}
 }
 
 /*
- * Add an IP address to the radix tree of a response policy database.
- *	The tree write lock must be held by the caller.
+ * Add an IP address to the radix tree.
  */
-void
-dns_rpz_cidr_addip(dns_rpz_cidr_t *cidr, dns_name_t *name) {
-	isc_result_t result;
+static isc_result_t
+add_cidr(dns_rpz_zones_t *rpzs, dns_rpz_num_t rpz_num,
+	 dns_rpz_type_t rpz_type, dns_name_t *src_name)
+{
 	dns_rpz_cidr_key_t tgt_ip;
-	dns_rpz_cidr_bits_t tgt_prefix;
-	dns_rpz_type_t type;
-
-	REQUIRE(cidr != NULL);
+	dns_rpz_prefix_t tgt_prefix;
+	dns_rpz_addr_zbits_t set;
+	dns_rpz_cidr_node_t *found;
+	isc_result_t result;
 
+	result = name2ipkey(DNS_RPZ_ERROR_LEVEL, rpzs, rpz_num, rpz_type,
+			    src_name, &tgt_ip, &tgt_prefix, &set);
 	/*
-	 * No worries if the new name is not an IP address.
+	 * Log complaints about bad owner names but let the zone load.
 	 */
-	type = set_type(cidr, name);
-	switch (type) {
-	case DNS_RPZ_TYPE_IP:
-	case DNS_RPZ_TYPE_NSIP:
-		break;
-	case DNS_RPZ_TYPE_NSDNAME:
-		cidr->have_nsdname = ISC_TRUE;
-		return;
-	case DNS_RPZ_TYPE_QNAME:
-	case DNS_RPZ_TYPE_BAD:
-		return;
-	}
-	result = name2ipkey(cidr, DNS_RPZ_ERROR_LEVEL, name,
-			    type, &tgt_ip, &tgt_prefix);
 	if (result != ISC_R_SUCCESS)
-		return;
+		return (ISC_R_SUCCESS);
 
-	result = search(cidr, &tgt_ip, tgt_prefix, type, ISC_TRUE, NULL);
-	if (result == ISC_R_EXISTS &&
-	    isc_log_wouldlog(dns_lctx, DNS_RPZ_ERROR_LEVEL))
-	{
-		char printname[DNS_NAME_FORMATSIZE];
+	result = search(rpzs, &tgt_ip, tgt_prefix, &set, ISC_TRUE, &found);
+	if (result != ISC_R_SUCCESS) {
+		char namebuf[DNS_NAME_FORMATSIZE];
 
 		/*
 		 * bin/tests/system/rpz/tests.sh looks for "rpz.*failed".
 		 */
-		dns_name_format(name, printname, sizeof(printname));
+		dns_name_format(src_name, namebuf, sizeof(namebuf));
 		isc_log_write(dns_lctx, DNS_LOGCATEGORY_RPZ,
 			      DNS_LOGMODULE_RBTDB, DNS_RPZ_ERROR_LEVEL,
-			      "rpz add failed; \"%s\" is a duplicate name",
-			      printname);
+			      "rpz add_cidr(%s) failed: %s",
+			      namebuf, isc_result_totext(result));
+		return (result);
 	}
+
+	adj_trigger_cnt(rpzs, rpz_num, rpz_type, &tgt_ip, tgt_prefix, ISC_TRUE);
+	return (result);
 }
 
-/*
- * Delete an IP address from the radix tree of a response policy database.
- *	The tree write lock must be held by the caller.
- */
-void
-dns_rpz_cidr_deleteip(dns_rpz_cidr_t *cidr, dns_name_t *name) {
+static isc_result_t
+add_nm(dns_rpz_zones_t *rpzs, dns_name_t *trig_name,
+	 const dns_rpz_nm_data_t *new_data)
+{
+	dns_rbtnode_t *nmnode;
+	dns_rpz_nm_data_t *nm_data;
 	isc_result_t result;
-	dns_rpz_cidr_key_t tgt_ip;
-	dns_rpz_cidr_bits_t tgt_prefix;
-	dns_rpz_type_t type;
-	dns_rpz_cidr_node_t *tgt = NULL, *parent, *child;
-	dns_rpz_cidr_flags_t flags, data_flag;
 
-	if (cidr == NULL)
-		return;
+	nmnode = NULL;
+	result = dns_rbt_addnode(rpzs->rbt, trig_name, &nmnode);
+	switch (result) {
+	case ISC_R_SUCCESS:
+	case ISC_R_EXISTS:
+		nm_data = nmnode->data;
+		if (nm_data == NULL) {
+			nm_data = isc_mem_get(rpzs->mctx, sizeof(*nm_data));
+			if (nm_data == NULL)
+				return (ISC_R_NOMEMORY);
+			*nm_data = *new_data;
+			nmnode->data = nm_data;
+			return (ISC_R_SUCCESS);
+		}
+		break;
+	default:
+		return (result);
+	}
 
 	/*
-	 * Decide which kind of policy zone IP address it is, if either
-	 * and then find its node.
+	 * Do not count bits that are already present
 	 */
-	type = set_type(cidr, name);
-	switch (type) {
-	case DNS_RPZ_TYPE_IP:
-	case DNS_RPZ_TYPE_NSIP:
-		break;
-	case DNS_RPZ_TYPE_NSDNAME:
+	if ((nm_data->set.qname & new_data->set.qname) != 0 ||
+	    (nm_data->set.ns & new_data->set.ns) != 0 ||
+	    (nm_data->wild.qname & new_data->wild.qname) != 0 ||
+	    (nm_data->wild.ns & new_data->wild.ns) != 0) {
+		char namebuf[DNS_NAME_FORMATSIZE];
+
 		/*
-		 * We cannot easily count nsdnames because
-		 * internal rbt nodes get deleted.
+		 * bin/tests/system/rpz/tests.sh looks for "rpz.*failed".
 		 */
+		dns_name_format(trig_name, namebuf, sizeof(namebuf));
+		isc_log_write(dns_lctx, DNS_LOGCATEGORY_RPZ,
+			      DNS_LOGMODULE_RBTDB, DNS_RPZ_ERROR_LEVEL,
+			      "rpz add_nm(%s): bits already set", namebuf);
+		return (ISC_R_EXISTS);
+	}
+
+	nm_data->set.qname |= new_data->set.qname;
+	nm_data->set.ns |= new_data->set.ns;
+	nm_data->wild.qname |= new_data->wild.qname;
+	nm_data->wild.ns |= new_data->wild.ns;
+	return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+add_name(dns_rpz_zones_t *rpzs, dns_rpz_num_t rpz_num,
+	 dns_rpz_type_t rpz_type, dns_name_t *src_name)
+{
+	dns_rpz_nm_data_t new_data;
+	dns_fixedname_t trig_namef;
+	dns_name_t *trig_name;
+	isc_result_t result;
+
+	dns_fixedname_init(&trig_namef);
+	trig_name = dns_fixedname_name(&trig_namef);
+	name2data(rpzs, rpz_num, rpz_type, src_name, trig_name, &new_data);
+
+	result = add_nm(rpzs, trig_name, &new_data);
+	if (result == ISC_R_SUCCESS)
+		adj_trigger_cnt(rpzs, rpz_num, rpz_type, NULL, 0, ISC_TRUE);
+	return (result);
+}
+
+/*
+ * Callback to free the data for a node in the summary RBT database.
+ */
+static void
+rpz_node_deleter(void *nm_data, void *mctx) {
+	isc_mem_put(mctx, nm_data, sizeof(dns_rpz_nm_data_t));
+}
+
+/*
+ * Get ready for a new set of policy zones.
+ */
+isc_result_t
+dns_rpz_new_zones(dns_rpz_zones_t **rpzsp, isc_mem_t *mctx) {
+	dns_rpz_zones_t *new;
+	isc_result_t result;
+
+	REQUIRE(rpzsp != NULL && *rpzsp == NULL);
+
+	*rpzsp = NULL;
+
+	new = isc_mem_get(mctx, sizeof(*new));
+	if (new == NULL)
+		return (ISC_R_NOMEMORY);
+	memset(new, 0, sizeof(*new));
+
+	result = isc_mutex_init(&new->search_lock);
+	if (result != ISC_R_SUCCESS) {
+		isc_mem_put(mctx, new, sizeof(*new));
+		return (result);
+	}
+
+	result = isc_mutex_init(&new->maint_lock);
+	if (result != ISC_R_SUCCESS) {
+		DESTROYLOCK(&new->search_lock);
+		isc_mem_put(mctx, new, sizeof(*new));
+		return (result);
+	}
+
+	result = isc_refcount_init(&new->refs, 1);
+	if (result != ISC_R_SUCCESS) {
+		DESTROYLOCK(&new->maint_lock);
+		DESTROYLOCK(&new->search_lock);
+		isc_mem_put(mctx, new, sizeof(*new));
+		return (result);
+	}
+
+	result = dns_rbt_create(mctx, rpz_node_deleter, mctx, &new->rbt);
+	if (result != ISC_R_SUCCESS) {
+		isc_refcount_decrement(&new->refs, NULL);
+		isc_refcount_destroy(&new->refs);
+		DESTROYLOCK(&new->maint_lock);
+		DESTROYLOCK(&new->search_lock);
+		isc_mem_put(mctx, new, sizeof(*new));
+		return (result);
+	}
+
+	isc_mem_attach(mctx, &new->mctx);
+
+	*rpzsp = new;
+	return (ISC_R_SUCCESS);
+}
+
+/*
+ * Free the radix tree of a response policy database.
+ */
+static void
+cidr_free(dns_rpz_zones_t *rpzs) {
+	dns_rpz_cidr_node_t *cur, *child, *parent;
+
+	cur = rpzs->cidr;
+	while (cur != NULL) {
+		/* Depth first. */
+		child = cur->child[0];
+		if (child != NULL) {
+			cur = child;
+			continue;
+		}
+		child = cur->child[1];
+		if (child != NULL) {
+			cur = child;
+			continue;
+		}
+
+		/* Delete this leaf and go up. */
+		parent = cur->parent;
+		if (parent == NULL)
+			rpzs->cidr = NULL;
+		else
+			parent->child[parent->child[1] == cur] = NULL;
+		isc_mem_put(rpzs->mctx, cur, sizeof(*cur));
+		cur = parent;
+	}
+}
+
+/*
+ * Discard a response policy zone blob
+ * before discarding the overall rpz structure.
+ */
+static void
+rpz_detach(dns_rpz_zone_t **rpzp, dns_rpz_zones_t *rpzs) {
+	dns_rpz_zone_t *rpz;
+	unsigned int refs;
+
+	rpz = *rpzp;
+	*rpzp = NULL;
+	isc_refcount_decrement(&rpz->refs, &refs);
+	if (refs != 0)
 		return;
-	case DNS_RPZ_TYPE_QNAME:
-	case DNS_RPZ_TYPE_BAD:
-		return;
+	isc_refcount_destroy(&rpz->refs);
+
+	if (dns_name_dynamic(&rpz->origin))
+		dns_name_free(&rpz->origin, rpzs->mctx);
+	if (dns_name_dynamic(&rpz->client_ip))
+		dns_name_free(&rpz->client_ip, rpzs->mctx);
+	if (dns_name_dynamic(&rpz->ip))
+		dns_name_free(&rpz->ip, rpzs->mctx);
+	if (dns_name_dynamic(&rpz->nsdname))
+		dns_name_free(&rpz->nsdname, rpzs->mctx);
+	if (dns_name_dynamic(&rpz->nsip))
+		dns_name_free(&rpz->nsip, rpzs->mctx);
+	if (dns_name_dynamic(&rpz->passthru))
+		dns_name_free(&rpz->passthru, rpzs->mctx);
+	if (dns_name_dynamic(&rpz->drop))
+		dns_name_free(&rpz->drop, rpzs->mctx);
+	if (dns_name_dynamic(&rpz->cname))
+		dns_name_free(&rpz->cname, rpzs->mctx);
+
+	isc_mem_put(rpzs->mctx, rpz, sizeof(*rpz));
+}
+
+void
+dns_rpz_attach_rpzs(dns_rpz_zones_t *rpzs, dns_rpz_zones_t **rpzsp) {
+	REQUIRE(rpzsp != NULL && *rpzsp == NULL);
+	isc_refcount_increment(&rpzs->refs, NULL);
+	*rpzsp = rpzs;
+}
+
+/*
+ * Forget a view's policy zones.
+ */
+void
+dns_rpz_detach_rpzs(dns_rpz_zones_t **rpzsp) {
+	dns_rpz_zones_t *rpzs;
+	dns_rpz_zone_t *rpz;
+	dns_rpz_num_t rpz_num;
+	unsigned int refs;
+
+	REQUIRE(rpzsp != NULL);
+	rpzs = *rpzsp;
+	REQUIRE(rpzs != NULL);
+
+	*rpzsp = NULL;
+	isc_refcount_decrement(&rpzs->refs, &refs);
+
+	/*
+	 * Forget the last of view's rpz machinery after the last reference.
+	 */
+	if (refs == 0) {
+		for (rpz_num = 0; rpz_num < DNS_RPZ_MAX_ZONES; ++rpz_num) {
+			rpz = rpzs->zones[rpz_num];
+			rpzs->zones[rpz_num] = NULL;
+			if (rpz != NULL)
+				rpz_detach(&rpz, rpzs);
+		}
+
+		cidr_free(rpzs);
+		dns_rbt_destroy(&rpzs->rbt);
+		DESTROYLOCK(&rpzs->maint_lock);
+		DESTROYLOCK(&rpzs->search_lock);
+		isc_refcount_destroy(&rpzs->refs);
+		isc_mem_putanddetach(&rpzs->mctx, rpzs, sizeof(*rpzs));
+	}
+}
+
+/*
+ * Create empty summary database to load one zone.
+ * The RBTDB write tree lock must be held.
+ */
+isc_result_t
+dns_rpz_beginload(dns_rpz_zones_t **load_rpzsp,
+		  dns_rpz_zones_t *rpzs, dns_rpz_num_t rpz_num)
+{
+	dns_rpz_zones_t *load_rpzs;
+	dns_rpz_zone_t *rpz;
+	dns_rpz_zbits_t tgt;
+	isc_result_t result;
+
+	REQUIRE(rpz_num < rpzs->p.num_zones);
+	rpz = rpzs->zones[rpz_num];
+	REQUIRE(rpz != NULL);
+
+	/*
+	 * When reloading a zone, there are usually records among the summary
+	 * data for the zone.  Some of those records might be deleted by the
+	 * reloaded zone data.  To deal with that case:
+	 *    reload the new zone data into a new blank summary database
+	 *    if the reload fails, discard the new summary database
+	 *    if the new zone data is acceptable, copy the records for the
+	 *	other zones into the new summary database and replace the
+	 *	old summary database with the new.
+	 *
+	 * At the first attempt to load a zone, there is no summary data
+	 * for the zone and so no records that need to be deleted.
+	 * This is also the most common case of policy zone loading.
+	 * Most policy zone maintenance should be by incremental changes
+	 * and so by the addition and deletion of individual records.
+	 * Detect that case and load records the first time into the
+	 * operational summary database
+	 */
+	tgt = DNS_RPZ_ZBIT(rpz_num);
+	LOCK(&rpzs->maint_lock);
+	LOCK(&rpzs->search_lock);
+	if ((rpzs->load_begun & tgt) == 0) {
+		rpzs->load_begun |= tgt;
+		dns_rpz_attach_rpzs(rpzs, load_rpzsp);
+		UNLOCK(&rpzs->search_lock);
+		UNLOCK(&rpzs->maint_lock);
+
+	} else {
+		UNLOCK(&rpzs->search_lock);
+		UNLOCK(&rpzs->maint_lock);
+
+		result = dns_rpz_new_zones(load_rpzsp, rpzs->mctx);
+		if (result != ISC_R_SUCCESS)
+			return (result);
+		load_rpzs = *load_rpzsp;
+		load_rpzs->p.num_zones = rpzs->p.num_zones;
+		load_rpzs->zones[rpz_num] = rpz;
+		isc_refcount_increment(&rpz->refs, NULL);
+	}
+
+	return (ISC_R_SUCCESS);
+}
+
+static void
+fix_triggers(dns_rpz_zones_t *rpzs, dns_rpz_triggers_t *totals) {
+	dns_rpz_num_t rpz_num;
+	const dns_rpz_zone_t *rpz;
+	dns_rpz_zbits_t zbit;
+
+#	define SET_TRIG(type)						\
+	if (rpz == NULL || rpz->triggers.type == 0) {			\
+		rpzs->have.type &= ~zbit;				\
+	} else {							\
+		totals->type += rpz->triggers.type;			\
+		rpzs->have.type |= zbit;				\
+	}
+
+	memset(totals, 0, sizeof(*totals));
+	for (rpz_num = 0; rpz_num < rpzs->p.num_zones; ++rpz_num) {
+		rpz = rpzs->zones[rpz_num];
+		zbit = DNS_RPZ_ZBIT(rpz_num);
+		SET_TRIG(client_ipv4);
+		SET_TRIG(client_ipv6);
+		SET_TRIG(qname);
+		SET_TRIG(ipv4);
+		SET_TRIG(ipv6);
+		SET_TRIG(nsdname);
+		SET_TRIG(nsipv4);
+		SET_TRIG(nsipv6);
+	}
+
+	fix_qname_skip_recurse(rpzs);
+
+#	undef SET_TRIG
+}
+
+/*
+ * Finish loading one zone.
+ * The RBTDB write tree lock must be held.
+ */
+isc_result_t
+dns_rpz_ready(dns_rpz_zones_t *rpzs,
+	      dns_rpz_zones_t **load_rpzsp, dns_rpz_num_t rpz_num)
+{
+	char namebuf[DNS_NAME_FORMATSIZE];
+	dns_rpz_zones_t *load_rpzs;
+	const dns_rpz_cidr_node_t *cnode, *next_cnode, *parent_cnode;
+	dns_rpz_cidr_node_t *found;
+	dns_rpz_zbits_t new_bit;
+	dns_rpz_addr_zbits_t new_ip;
+	dns_rbt_t *rbt;
+	dns_rbtnodechain_t chain;
+	dns_rbtnode_t *nmnode;
+	dns_rpz_nm_data_t *nm_data, new_data;
+	dns_rpz_triggers_t old_totals, new_totals;
+	dns_fixedname_t labelf, originf, namef;
+	dns_name_t *label, *origin, *name;
+	isc_result_t result;
+
+	INSIST(rpzs != NULL);
+	LOCK(&rpzs->maint_lock);
+	load_rpzs = *load_rpzsp;
+	INSIST(load_rpzs != NULL);
+
+	if (load_rpzs == rpzs) {
+		/*
+		 * This is a successful initial zone loading,
+		 * perhaps for a new instance of a view.
+		 */
+		fix_triggers(rpzs, &new_totals);
+		UNLOCK(&rpzs->maint_lock);
+		dns_rpz_detach_rpzs(load_rpzsp);
+
+		if (rpz_num == rpzs->p.num_zones-1)
+			isc_log_write(dns_lctx, DNS_LOGCATEGORY_RPZ,
+				      DNS_LOGMODULE_RBTDB, DNS_RPZ_INFO_LEVEL,
+				      "loaded policy %d zones with"
+				      " %d client-IPv4, %d client-IPv6,"
+				      " %d qname, %d nsdname,"
+				      " %d IPv4, %d IPv6,"
+				      " %d NSIPv4, %d NSIPv6 entries",
+				      rpzs->p.num_zones,
+				      new_totals.client_ipv4,
+				      new_totals.client_ipv6,
+				      new_totals.qname,
+				      new_totals.nsdname,
+				      new_totals.ipv4,
+				      new_totals.ipv6,
+				      new_totals.nsipv4,
+				      new_totals.nsipv6);
+		return (ISC_R_SUCCESS);
+	}
+
+	LOCK(&load_rpzs->maint_lock);
+	LOCK(&load_rpzs->search_lock);
+
+	/*
+	 * Copy the other policy zones to the new summary databases
+	 * unless there is only one policy zone.
+	 */
+	if (rpzs->p.num_zones > 1) {
+		new_bit = ~DNS_RPZ_ZBIT(rpz_num);
+
+		/*
+		 * Copy to the radix tree.
+		 */
+		for (cnode = rpzs->cidr; cnode != NULL; cnode = next_cnode) {
+			new_ip.ip = cnode->set.ip & new_bit;
+			new_ip.client_ip = cnode->set.client_ip & new_bit;
+			new_ip.nsip = cnode->set.nsip & new_bit;
+			if (new_ip.client_ip != 0 ||
+			    new_ip.ip != 0 ||
+			    new_ip.nsip != 0) {
+				result = search(load_rpzs,
+						&cnode->ip, cnode->prefix,
+						&new_ip, ISC_TRUE, &found);
+				if (result == ISC_R_NOMEMORY)
+					goto unlock_and_detach;
+				INSIST(result == ISC_R_SUCCESS);
+			}
+			/*
+			 * Do down and to the left as far as possible.
+			 */
+			next_cnode = cnode->child[0];
+			if (next_cnode != NULL)
+				continue;
+			/*
+			 * Go up until we find a branch to the right where
+			 * we previously took the branch to the left.
+			 */
+			for (;;) {
+				parent_cnode = cnode->parent;
+				if (parent_cnode == NULL)
+					break;
+				if (parent_cnode->child[0] == cnode) {
+					next_cnode = parent_cnode->child[1];
+					if (next_cnode != NULL)
+					    break;
+				}
+				cnode = parent_cnode;
+			}
+		}
+
+		/*
+		 * Copy to the summary RBT.
+		 */
+		dns_fixedname_init(&namef);
+		name = dns_fixedname_name(&namef);
+		dns_fixedname_init(&labelf);
+		label = dns_fixedname_name(&labelf);
+		dns_fixedname_init(&originf);
+		origin = dns_fixedname_name(&originf);
+		dns_rbtnodechain_init(&chain, NULL);
+		result = dns_rbtnodechain_first(&chain, rpzs->rbt, NULL, NULL);
+		while (result == DNS_R_NEWORIGIN || result == ISC_R_SUCCESS) {
+			result = dns_rbtnodechain_current(&chain, label, origin,
+							&nmnode);
+			INSIST(result == ISC_R_SUCCESS);
+			nm_data = nmnode->data;
+			if (nm_data != NULL) {
+				new_data.set.qname = (nm_data->set.qname &
+						      new_bit);
+				new_data.set.ns = nm_data->set.ns & new_bit;
+				new_data.wild.qname = (nm_data->wild.qname &
+						       new_bit);
+				new_data.wild.ns = nm_data->wild.ns & new_bit;
+				if (new_data.set.qname != 0 ||
+				    new_data.set.ns != 0 ||
+				    new_data.wild.qname != 0 ||
+				    new_data.wild.ns != 0) {
+					result = dns_name_concatenate(label,
+							origin, name, NULL);
+					INSIST(result == ISC_R_SUCCESS);
+					result = add_nm(load_rpzs, name,
+							&new_data);
+					if (result != ISC_R_SUCCESS)
+						goto unlock_and_detach;
+				}
+			}
+			result = dns_rbtnodechain_next(&chain, NULL, NULL);
+		}
+		if (result != ISC_R_NOMORE && result != ISC_R_NOTFOUND) {
+			isc_log_write(dns_lctx, DNS_LOGCATEGORY_RPZ,
+				      DNS_LOGMODULE_RBTDB, DNS_RPZ_ERROR_LEVEL,
+				      "dns_rpz_ready(): unexpected %s",
+				      isc_result_totext(result));
+			goto unlock_and_detach;
+		}
 	}
 
+	fix_triggers(rpzs, &old_totals);
+	fix_triggers(load_rpzs, &new_totals);
+
+	dns_name_format(&load_rpzs->zones[rpz_num]->origin,
+			namebuf, sizeof(namebuf));
+	isc_log_write(dns_lctx, DNS_LOGCATEGORY_RPZ,
+		      DNS_LOGMODULE_RBTDB, DNS_RPZ_INFO_LEVEL,
+		      "reloading policy zone '%s' changed from"
+		      " %d to %d qname, %d to %d nsdname,"
+		      " %d to %d IP, %d to %d NSIP entries",
+		      namebuf,
+		      old_totals.qname, new_totals.qname,
+		      old_totals.nsdname, new_totals.nsdname,
+		      old_totals.ipv4 + old_totals.ipv6,
+		      new_totals.ipv4 + new_totals.ipv6,
+		      old_totals.nsipv4 + old_totals.nsipv6,
+		      new_totals.nsipv4 + new_totals.nsipv6);
+
 	/*
-	 * Do not get excited about the deletion of interior rbt nodes.
+	 * Exchange the summary databases.
 	 */
-	result = name2ipkey(cidr, DNS_RPZ_DEBUG_QUIET, name,
-			    type, &tgt_ip, &tgt_prefix);
+	LOCK(&rpzs->search_lock);
+
+	found = rpzs->cidr;
+	rpzs->cidr = load_rpzs->cidr;
+	load_rpzs->cidr = found;
+
+	rbt = rpzs->rbt;
+	rpzs->rbt = load_rpzs->rbt;
+	load_rpzs->rbt = rbt;
+
+	UNLOCK(&rpzs->search_lock);
+	result = ISC_R_SUCCESS;
+
+ unlock_and_detach:
+	UNLOCK(&rpzs->maint_lock);
+	UNLOCK(&load_rpzs->search_lock);
+	UNLOCK(&load_rpzs->maint_lock);
+	dns_rpz_detach_rpzs(load_rpzsp);
+	return (result);
+}
+
+/*
+ * Add an IP address to the radix tree or a name to the summary database.
+ */
+isc_result_t
+dns_rpz_add(dns_rpz_zones_t *rpzs, dns_rpz_num_t rpz_num, dns_name_t *src_name)
+{
+	dns_rpz_zone_t *rpz;
+	dns_rpz_type_t rpz_type;
+	isc_result_t result = ISC_R_FAILURE;
+
+	REQUIRE(rpzs != NULL && rpz_num < rpzs->p.num_zones);
+	rpz = rpzs->zones[rpz_num];
+	REQUIRE(rpz != NULL);
+
+	rpz_type = type_from_name(rpz, src_name);
+
+	LOCK(&rpzs->maint_lock);
+	LOCK(&rpzs->search_lock);
+
+	switch (rpz_type) {
+	case DNS_RPZ_TYPE_QNAME:
+	case DNS_RPZ_TYPE_NSDNAME:
+		result = add_name(rpzs, rpz_num, rpz_type, src_name);
+		break;
+	case DNS_RPZ_TYPE_CLIENT_IP:
+	case DNS_RPZ_TYPE_IP:
+	case DNS_RPZ_TYPE_NSIP:
+		result = add_cidr(rpzs, rpz_num, rpz_type, src_name);
+		break;
+	case DNS_RPZ_TYPE_BAD:
+		break;
+	}
+
+	UNLOCK(&rpzs->search_lock);
+	UNLOCK(&rpzs->maint_lock);
+	return (result);
+}
+
+/*
+ * Remove an IP address from the radix tree.
+ */
+static void
+del_cidr(dns_rpz_zones_t *rpzs, dns_rpz_num_t rpz_num,
+	 dns_rpz_type_t rpz_type, dns_name_t *src_name)
+{
+	isc_result_t result;
+	dns_rpz_cidr_key_t tgt_ip;
+	dns_rpz_prefix_t tgt_prefix;
+	dns_rpz_addr_zbits_t tgt_set;
+	dns_rpz_cidr_node_t *tgt, *parent, *child;
+
+	/*
+	 * Do not worry about invalid rpz IP address names.  If we
+	 * are here, then something relevant was added and so was
+	 * valid.  Invalid names here are usually internal RBTDB nodes.
+	 */
+	result = name2ipkey(DNS_RPZ_DEBUG_QUIET, rpzs, rpz_num, rpz_type,
+			    src_name, &tgt_ip, &tgt_prefix, &tgt_set);
 	if (result != ISC_R_SUCCESS)
 		return;
 
-	result = search(cidr, &tgt_ip, tgt_prefix, type, ISC_FALSE, &tgt);
+	result = search(rpzs, &tgt_ip, tgt_prefix, &tgt_set, ISC_FALSE, &tgt);
 	if (result != ISC_R_SUCCESS) {
-		badname(DNS_RPZ_ERROR_LEVEL, name, "; missing rpz node", "");
+		INSIST(result == ISC_R_NOTFOUND ||
+		       result == DNS_R_PARTIALMATCH);
+		/*
+		 * Do not worry about missing summary RBT nodes that probably
+		 * correspond to RBTDB nodes that were implicit RBT nodes
+		 * that were later added for (often empty) wildcards
+		 * and then to the RBTDB deferred cleanup list.
+		 */
 		return;
 	}
 
 	/*
 	 * Mark the node and its parents to reflect the deleted IP address.
+	 * Do not count bits that are already clear for internal RBTDB nodes.
 	 */
-	flags = get_flags(&tgt_ip, tgt_prefix, type);
-	data_flag = flags & (DNS_RPZ_CIDR_FG_IP_DATA |
-			      DNS_RPZ_CIDR_FG_NSIP_DATA);
-	tgt->flags &= ~data_flag;
-	for (parent = tgt; parent != NULL; parent = parent->parent) {
-		if ((parent->flags & data_flag) != 0 ||
-		    (parent->child[0] != NULL &&
-		     (parent->child[0]->flags & flags) != 0) ||
-		    (parent->child[1] != NULL &&
-		     (parent->child[1]->flags & flags) != 0))
-			break;
-		parent->flags &= ~flags;
-	}
+	tgt_set.client_ip &= tgt->set.client_ip;
+	tgt_set.ip &= tgt->set.ip;
+	tgt_set.nsip &= tgt->set.nsip;
+	tgt->set.client_ip &= ~tgt_set.client_ip;
+	tgt->set.ip &= ~tgt_set.ip;
+	tgt->set.nsip &= ~tgt_set.nsip;
+	set_sum_pair(tgt);
+
+	adj_trigger_cnt(rpzs, rpz_num, rpz_type, &tgt_ip, tgt_prefix, ISC_FALSE);
 
 	/*
 	 * We might need to delete 2 nodes.
@@ -1054,13 +1757,14 @@
 		 */
 		if ((child = tgt->child[0]) != NULL) {
 			if (tgt->child[1] != NULL)
-				return;
+				break;
 		} else {
 			child = tgt->child[1];
 		}
-		if ((tgt->flags & (DNS_RPZ_CIDR_FG_IP_DATA |
-				 DNS_RPZ_CIDR_FG_NSIP_DATA)) != 0)
-			return;
+		if (tgt->set.client_ip != 0 ||
+		    tgt->set.ip != 0 ||
+		    tgt->set.nsip != 0)
+			break;
 
 		/*
 		 * Replace the pointer to this node in the parent with
@@ -1068,7 +1772,7 @@
 		 */
 		parent = tgt->parent;
 		if (parent == NULL) {
-			cidr->root = child;
+			rpzs->cidr = child;
 		} else {
 			parent->child[parent->child[1] == tgt] = child;
 		}
@@ -1077,26 +1781,144 @@
 		 */
 		if (child != NULL)
 			child->parent = parent;
-		isc_mem_put(cidr->mctx, tgt, sizeof(*tgt));
+		isc_mem_put(rpzs->mctx, tgt, sizeof(*tgt));
 
 		tgt = parent;
 	} while (tgt != NULL);
 }
 
+static void
+del_name(dns_rpz_zones_t *rpzs, dns_rpz_num_t rpz_num,
+	 dns_rpz_type_t rpz_type, dns_name_t *src_name)
+{
+	char namebuf[DNS_NAME_FORMATSIZE];
+	dns_fixedname_t trig_namef;
+	dns_name_t *trig_name;
+	dns_rbtnode_t *nmnode;
+	dns_rpz_nm_data_t *nm_data, del_data;
+	isc_result_t result;
+
+	dns_fixedname_init(&trig_namef);
+	trig_name = dns_fixedname_name(&trig_namef);
+	name2data(rpzs, rpz_num, rpz_type, src_name, trig_name, &del_data);
+
+	/*
+	 * No need for a summary database of names with only 1 policy zone.
+	 */
+	if (rpzs->p.num_zones <= 1) {
+		adj_trigger_cnt(rpzs, rpz_num, rpz_type, NULL, 0, ISC_FALSE);
+		return;
+	}
+
+	nmnode = NULL;
+	result = dns_rbt_findnode(rpzs->rbt, trig_name, NULL, &nmnode, NULL, 0,
+				  NULL, NULL);
+	if (result != ISC_R_SUCCESS) {
+		/*
+		 * Do not worry about missing summary RBT nodes that probably
+		 * correspond to RBTDB nodes that were implicit RBT nodes
+		 * that were later added for (often empty) wildcards
+		 * and then to the RBTDB deferred cleanup list.
+		 */
+		if (result == ISC_R_NOTFOUND)
+			return;
+		dns_name_format(src_name, namebuf, sizeof(namebuf));
+		isc_log_write(dns_lctx, DNS_LOGCATEGORY_RPZ,
+			      DNS_LOGMODULE_RBTDB, DNS_RPZ_ERROR_LEVEL,
+			      "rpz del_name(%s) node search failed: %s",
+			      namebuf, isc_result_totext(result));
+		return;
+	}
+
+	nm_data = nmnode->data;
+	INSIST(nm_data != NULL);
+
+	/*
+	 * Do not count bits that next existed for RBT nodes that would we
+	 * would not have found in a summary for a single RBTDB tree.
+	 */
+	del_data.set.qname &= nm_data->set.qname;
+	del_data.set.ns &= nm_data->set.ns;
+	del_data.wild.qname &= nm_data->wild.qname;
+	del_data.wild.ns &= nm_data->wild.ns;
+
+	nm_data->set.qname &= ~del_data.set.qname;
+	nm_data->set.ns &= ~del_data.set.ns;
+	nm_data->wild.qname &= ~del_data.wild.qname;
+	nm_data->wild.ns &= ~del_data.wild.ns;
+
+	if (nm_data->set.qname == 0 && nm_data->set.ns == 0 &&
+	    nm_data->wild.qname == 0 && nm_data->wild.ns == 0) {
+		result = dns_rbt_deletenode(rpzs->rbt, nmnode, ISC_FALSE);
+		if (result != ISC_R_SUCCESS) {
+			/*
+			 * bin/tests/system/rpz/tests.sh looks for "rpz.*failed".
+			 */
+			dns_name_format(src_name, namebuf, sizeof(namebuf));
+			isc_log_write(dns_lctx, DNS_LOGCATEGORY_RPZ,
+				      DNS_LOGMODULE_RBTDB, DNS_RPZ_ERROR_LEVEL,
+				      "rpz del_name(%s) node delete failed: %s",
+				      namebuf, isc_result_totext(result));
+		}
+	}
+
+	adj_trigger_cnt(rpzs, rpz_num, rpz_type, NULL, 0, ISC_FALSE);
+}
+
 /*
- * Caller must hold tree lock.
- * Return  ISC_R_NOTFOUND
- *	or ISC_R_SUCCESS and the found entry's canonical and search names
- *	    and its prefix length
+ * Remove an IP address from the radix tree or a name from the summary database.
  */
-isc_result_t
-dns_rpz_cidr_find(dns_rpz_cidr_t *cidr, const isc_netaddr_t *netaddr,
-		  dns_rpz_type_t type, dns_name_t *canon_name,
-		  dns_name_t *search_name, dns_rpz_cidr_bits_t *prefix)
+void
+dns_rpz_delete(dns_rpz_zones_t *rpzs, dns_rpz_num_t rpz_num,
+	       dns_name_t *src_name) {
+	dns_rpz_zone_t *rpz;
+	dns_rpz_type_t rpz_type;
+
+	REQUIRE(rpzs != NULL && rpz_num < rpzs->p.num_zones);
+	rpz = rpzs->zones[rpz_num];
+	REQUIRE(rpz != NULL);
+
+	rpz_type = type_from_name(rpz, src_name);
+
+	LOCK(&rpzs->maint_lock);
+	LOCK(&rpzs->search_lock);
+
+	switch (rpz_type) {
+	case DNS_RPZ_TYPE_QNAME:
+	case DNS_RPZ_TYPE_NSDNAME:
+		del_name(rpzs, rpz_num, rpz_type, src_name);
+		break;
+	case DNS_RPZ_TYPE_CLIENT_IP:
+	case DNS_RPZ_TYPE_IP:
+	case DNS_RPZ_TYPE_NSIP:
+		del_cidr(rpzs, rpz_num, rpz_type, src_name);
+		break;
+	case DNS_RPZ_TYPE_BAD:
+		break;
+	}
+
+	UNLOCK(&rpzs->search_lock);
+	UNLOCK(&rpzs->maint_lock);
+}
+
+/*
+ * Search the summary radix tree to get a relative owner name in a
+ * policy zone relevant to a triggering IP address.
+ *	rpz_type and zbits limit the search for IP address netaddr
+ *	return the policy zone's number or DNS_RPZ_INVALID_NUM
+ *	ip_name is the relative owner name found and
+ *	*prefixp is its prefix length.
+ */
+dns_rpz_num_t
+dns_rpz_find_ip(dns_rpz_zones_t *rpzs, dns_rpz_type_t rpz_type,
+		dns_rpz_zbits_t zbits, const isc_netaddr_t *netaddr,
+		dns_name_t *ip_name, dns_rpz_prefix_t *prefixp)
 {
 	dns_rpz_cidr_key_t tgt_ip;
-	isc_result_t result;
+	dns_rpz_addr_zbits_t tgt_set;
 	dns_rpz_cidr_node_t *found;
+	isc_result_t result;
+	dns_rpz_num_t rpz_num;
 	int i;
 
 	/*
@@ -1107,29 +1929,163 @@
 		tgt_ip.w[1] = 0;
 		tgt_ip.w[2] = ADDR_V4MAPPED;
 		tgt_ip.w[3] = ntohl(netaddr->type.in.s_addr);
+		switch (rpz_type) {
+		case DNS_RPZ_TYPE_CLIENT_IP:
+			zbits &= rpzs->have.client_ipv4;
+			break;
+		case DNS_RPZ_TYPE_IP:
+			zbits &= rpzs->have.ipv4;
+			break;
+		case DNS_RPZ_TYPE_NSIP:
+			zbits &= rpzs->have.nsipv4;
+			break;
+		default:
+			INSIST(0);
+			break;
+		}
 	} else if (netaddr->family == AF_INET6) {
 		dns_rpz_cidr_key_t src_ip6;
 
 		/*
 		 * Given the int aligned struct in_addr member of netaddr->type
 		 * one could cast netaddr->type.in6 to dns_rpz_cidr_key_t *,
-		 * but there are objections.
+		 * but some people object.
 		 */
 		memcpy(src_ip6.w, &netaddr->type.in6, sizeof(src_ip6.w));
 		for (i = 0; i < 4; i++) {
 			tgt_ip.w[i] = ntohl(src_ip6.w[i]);
 		}
+		switch (rpz_type) {
+		case DNS_RPZ_TYPE_CLIENT_IP:
+			zbits &= rpzs->have.client_ipv6;
+			break;
+		case DNS_RPZ_TYPE_IP:
+			zbits &= rpzs->have.ipv6;
+			break;
+		case DNS_RPZ_TYPE_NSIP:
+			zbits &= rpzs->have.nsipv6;
+			break;
+		default:
+			INSIST(0);
+			break;
+		}
 	} else {
-		return (ISC_R_NOTFOUND);
+		return (DNS_RPZ_INVALID_NUM);
 	}
 
-	result = search(cidr, &tgt_ip, 128, type, ISC_FALSE, &found);
-	if (result != ISC_R_SUCCESS && result != DNS_R_PARTIALMATCH)
-		return (result);
+	if (zbits == 0)
+		return (DNS_RPZ_INVALID_NUM);
+	make_addr_set(&tgt_set, zbits, rpz_type);
+
+	LOCK(&rpzs->search_lock);
+	result = search(rpzs, &tgt_ip, 128, &tgt_set, ISC_FALSE, &found);
+	if (result == ISC_R_NOTFOUND) {
+		/*
+		 * There are no eligible zones for this IP address.
+		 */
+		UNLOCK(&rpzs->search_lock);
+		return (DNS_RPZ_INVALID_NUM);
+	}
+
+	/*
+	 * Construct the trigger name for the longest matching trigger
+	 * in the first eligible zone with a match.
+	 */
+	*prefixp = found->prefix;
+	switch (rpz_type) {
+	case DNS_RPZ_TYPE_CLIENT_IP:
+		rpz_num = zbit_to_num(found->set.client_ip & tgt_set.client_ip);
+		break;
+	case DNS_RPZ_TYPE_IP:
+		rpz_num = zbit_to_num(found->set.ip & tgt_set.ip);
+		break;
+	case DNS_RPZ_TYPE_NSIP:
+		rpz_num = zbit_to_num(found->set.nsip & tgt_set.nsip);
+		break;
+	default:
+		INSIST(0);
+		break;
+	}
+	result = ip2name(&found->ip, found->prefix, dns_rootname, ip_name);
+	UNLOCK(&rpzs->search_lock);
+	if (result != ISC_R_SUCCESS) {
+		/*
+		 * bin/tests/system/rpz/tests.sh looks for "rpz.*failed".
+		 */
+		isc_log_write(dns_lctx, DNS_LOGCATEGORY_RPZ,
+			      DNS_LOGMODULE_RBTDB, DNS_RPZ_ERROR_LEVEL,
+			      "rpz ip2name() failed: %s",
+			      isc_result_totext(result));
+		return (DNS_RPZ_INVALID_NUM);
+	}
+	return (rpz_num);
+}
 
-	*prefix = found->bits;
-	return (ip2name(cidr, &found->ip, found->bits, type,
-			canon_name, search_name));
+/*
+ * Search the summary radix tree for policy zones with triggers matching
+ * a name.
+ */
+dns_rpz_zbits_t
+dns_rpz_find_name(dns_rpz_zones_t *rpzs, dns_rpz_type_t rpz_type,
+		  dns_rpz_zbits_t zbits, dns_name_t *trig_name)
+{
+	char namebuf[DNS_NAME_FORMATSIZE];
+	dns_rbtnode_t *nmnode;
+	const dns_rpz_nm_data_t *nm_data;
+	dns_rpz_zbits_t found_zbits;
+	isc_result_t result;
+
+	if (zbits == 0)
+		return (0);
+
+	found_zbits = 0;
+
+	LOCK(&rpzs->search_lock);
+
+	nmnode = NULL;
+	result = dns_rbt_findnode(rpzs->rbt, trig_name, NULL, &nmnode, NULL,
+				  DNS_RBTFIND_EMPTYDATA, NULL, NULL);
+	switch (result) {
+	case ISC_R_SUCCESS:
+		nm_data = nmnode->data;
+		if (nm_data != NULL) {
+			if (rpz_type == DNS_RPZ_TYPE_QNAME)
+				found_zbits = nm_data->set.qname;
+			else
+				found_zbits = nm_data->set.ns;
+		}
+		nmnode = nmnode->parent;
+		/* fall thru */
+	case DNS_R_PARTIALMATCH:
+		while (nmnode != NULL) {
+			nm_data = nmnode->data;
+			if (nm_data != NULL) {
+				if (rpz_type == DNS_RPZ_TYPE_QNAME)
+					found_zbits |= nm_data->wild.qname;
+				else
+					found_zbits |= nm_data->wild.ns;
+			}
+			nmnode = nmnode->parent;
+		}
+		break;
+
+	case ISC_R_NOTFOUND:
+		break;
+
+	default:
+		/*
+		 * bin/tests/system/rpz/tests.sh looks for "rpz.*failed".
+		 */
+		dns_name_format(trig_name, namebuf, sizeof(namebuf));
+		isc_log_write(dns_lctx, DNS_LOGCATEGORY_RPZ,
+			      DNS_LOGMODULE_RBTDB, DNS_RPZ_ERROR_LEVEL,
+			      "dns_rpz_find_name(%s) failed: %s",
+			      namebuf, isc_result_totext(result));
+		break;
+	}
+
+	UNLOCK(&rpzs->search_lock);
+	return (zbits & found_zbits);
 }
 
 /*
@@ -1144,10 +2100,10 @@
 	isc_result_t result;
 
 	result = dns_rdataset_first(rdataset);
-	RUNTIME_CHECK(result == ISC_R_SUCCESS);
+	INSIST(result == ISC_R_SUCCESS);
 	dns_rdataset_current(rdataset, &rdata);
 	result = dns_rdata_tostruct(&rdata, &cname, NULL);
-	RUNTIME_CHECK(result == ISC_R_SUCCESS);
+	INSIST(result == ISC_R_SUCCESS);
 	dns_rdata_reset(&rdata);
 
 	/*
@@ -1174,7 +2130,13 @@
 	}
 
 	/*
-	 * CNAME PASSTHRU.origin means "do not rewrite.
+	 * CNAME rpz-drop. means "do respond."
+	 */
+	if (dns_name_equal(&cname.cname, &rpz->drop))
+		return (DNS_RPZ_POLICY_DROP);
+
+	/*
+	 * CNAME rpz-passthru. means "do not rewrite."
 	 */
 	if (dns_name_equal(&cname.cname, &rpz->passthru))
 		return (DNS_RPZ_POLICY_PASSTHRU);
diff -r -u lib/dns/rrl.c-orig lib/dns/rrl.c
--- lib/dns/rrl.c-orig	2004-01-01 00:00:00.000000000 +0000
+++ lib/dns/rrl.c	2004-01-01 00:00:00.000000000 +0000
@@ -0,0 +1,1324 @@
+/*
+ * Copyright (C) 2013  Internet Systems Consortium, Inc. ("ISC")
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+ * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*! \file */
+
+/*
+ * Rate limit DNS responses.
+ */
+
+/* #define ISC_LIST_CHECKINIT */
+
+#include <config.h>
+#include <isc/mem.h>
+#include <isc/net.h>
+#include <isc/netaddr.h>
+#include <isc/print.h>
+
+#include <dns/result.h>
+#include <dns/rcode.h>
+#include <dns/rdatatype.h>
+#include <dns/rdataclass.h>
+#include <dns/log.h>
+#include <dns/rrl.h>
+#include <dns/view.h>
+
+static void
+log_end(dns_rrl_t *rrl, dns_rrl_entry_t *e, isc_boolean_t early,
+	char *log_buf, unsigned int log_buf_len);
+
+/*
+ * Get a modulus for a hash function that is tolerably likely to be
+ * relatively prime to most inputs.  Of course, we get a prime for for initial
+ * values not larger than the square of the last prime.  We often get a prime
+ * after that.
+ * This works well in practice for hash tables up to at least 100
+ * times the square of the last prime and better than a multiplicative hash.
+ */
+static int
+hash_divisor(unsigned int initial) {
+	static isc_uint16_t primes[] = {
+		  3,   5,   7,  11,  13,  17,  19,  23,  29,  31,  37,  41,
+		 43,  47,  53,  59,  61,  67,  71,  73,  79,  83,  89,  97,
+#if 0
+		101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157,
+		163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227,
+		229, 233, 239, 241, 251, 257, 263, 269, 271, 277, 281, 283,
+		293, 307, 311, 313, 317, 331, 337, 347, 349, 353, 359, 367,
+		373, 379, 383, 389, 397, 401, 409, 419, 421, 431, 433, 439,
+		443, 449, 457, 461, 463, 467, 479, 487, 491, 499, 503, 509,
+		521, 523, 541, 547, 557, 563, 569, 571, 577, 587, 593, 599,
+		601, 607, 613, 617, 619, 631, 641, 643, 647, 653, 659, 661,
+		673, 677, 683, 691, 701, 709, 719, 727, 733, 739, 743, 751,
+		757, 761, 769, 773, 787, 797, 809, 811, 821, 823, 827, 829,
+		839, 853, 857, 859, 863, 877, 881, 883, 887, 907, 911, 919,
+		929, 937, 941, 947, 953, 967, 971, 977, 983, 991, 997,1009,
+#endif
+	};
+	int divisions, tries;
+	unsigned int result;
+	isc_uint16_t *pp, p;
+
+	result = initial;
+
+	if (primes[sizeof(primes)/sizeof(primes[0])-1] >= result) {
+		pp = primes;
+		while (*pp < result)
+			++pp;
+		return (*pp);
+	}
+
+	if ((result & 1) == 0)
+		++result;
+
+	divisions = 0;
+	tries = 1;
+	pp = primes;
+	do {
+		p = *pp++;
+		++divisions;
+		if ((result % p) == 0) {
+			++tries;
+			result += 2;
+			pp = primes;
+		}
+	} while (pp < &primes[sizeof(primes) / sizeof(primes[0])]);
+
+	if (isc_log_wouldlog(dns_lctx, DNS_RRL_LOG_DEBUG3))
+		isc_log_write(dns_lctx, DNS_LOGCATEGORY_RRL,
+			      DNS_LOGMODULE_REQUEST, DNS_RRL_LOG_DEBUG3,
+			      "%d hash_divisor() divisions in %d tries"
+			      " to get %d from %d",
+			      divisions, tries, result, initial);
+
+	return (result);
+}
+
+/*
+ * Convert a timestamp to a number of seconds in the past.
+ */
+static inline int
+delta_rrl_time(isc_stdtime_t ts, isc_stdtime_t now) {
+	int delta;
+
+	delta = now - ts;
+	if (delta >= 0)
+		return (delta);
+
+	/*
+	 * The timestamp is in the future.  That future might result from
+	 * re-ordered requests, because we use timestamps on requests
+	 * instead of consulting a clock.  Timestamps in the distant future are
+	 * assumed to result from clock changes.  When the clock changes to
+	 * the past, make existing timestamps appear to be in the past.
+	 */
+	if (delta < -DNS_RRL_MAX_TIME_TRAVEL)
+		return (DNS_RRL_FOREVER);
+	return (0);
+}
+
+static inline int
+get_age(const dns_rrl_t *rrl, const dns_rrl_entry_t *e, isc_stdtime_t now) {
+	if (!e->ts_valid)
+		return (DNS_RRL_FOREVER);
+	return (delta_rrl_time(e->ts + rrl->ts_bases[e->ts_gen], now));
+}
+
+static inline void
+set_age(dns_rrl_t *rrl, dns_rrl_entry_t *e, isc_stdtime_t now) {
+	dns_rrl_entry_t *e_old;
+	unsigned int ts_gen;
+	int i, ts;
+
+	ts_gen = rrl->ts_gen;
+	ts = now - rrl->ts_bases[ts_gen];
+	if (ts < 0) {
+		if (ts < -DNS_RRL_MAX_TIME_TRAVEL)
+			ts = DNS_RRL_FOREVER;
+		else
+			ts = 0;
+	}
+
+	/*
+	 * Make a new timestamp base if the current base is too old.
+	 * All entries older than DNS_RRL_MAX_WINDOW seconds are ancient,
+	 * useless history.  Their timestamps can be treated as if they are
+	 * all the same.
+	 * We only do arithmetic on more recent timestamps, so bases for
+	 * older timestamps can be recycled provided the old timestamps are
+	 * marked as ancient history.
+	 * This loop is almost always very short because most entries are
+	 * recycled after one second and any entries that need to be marked
+	 * are older than (DNS_RRL_TS_BASES)*DNS_RRL_MAX_TS seconds.
+	 */
+	if (ts >= DNS_RRL_MAX_TS) {
+		ts_gen = (ts_gen + 1) % DNS_RRL_TS_BASES;
+		for (e_old = ISC_LIST_TAIL(rrl->lru), i = 0;
+		     e_old != NULL && (e_old->ts_gen == ts_gen ||
+				       !ISC_LINK_LINKED(e_old, hlink));
+		     e_old = ISC_LIST_PREV(e_old, lru), ++i)
+		{
+			e_old->ts_valid = ISC_FALSE;
+		}
+		if (i != 0)
+			isc_log_write(dns_lctx, DNS_LOGCATEGORY_RRL,
+				      DNS_LOGMODULE_REQUEST, DNS_RRL_LOG_DEBUG1,
+				      "rrl new time base scanned %d entries"
+				      " at %d for %d %d %d %d",
+				      i, now, rrl->ts_bases[ts_gen],
+				      rrl->ts_bases[(ts_gen + 1) %
+					DNS_RRL_TS_BASES],
+				      rrl->ts_bases[(ts_gen + 2) %
+					DNS_RRL_TS_BASES],
+				      rrl->ts_bases[(ts_gen + 3) %
+					DNS_RRL_TS_BASES]);
+		rrl->ts_gen = ts_gen;
+		rrl->ts_bases[ts_gen] = now;
+		ts = 0;
+	}
+
+	e->ts_gen = ts_gen;
+	e->ts = ts;
+	e->ts_valid = ISC_TRUE;
+}
+
+static isc_result_t
+expand_entries(dns_rrl_t *rrl, int new) {
+	unsigned int bsize;
+	dns_rrl_block_t *b;
+	dns_rrl_entry_t *e;
+	double rate;
+	int i;
+
+	if (rrl->num_entries+new >= rrl->max_entries && rrl->max_entries != 0) {
+		if (rrl->num_entries >= rrl->max_entries)
+			return (ISC_R_SUCCESS);
+		new = rrl->max_entries - rrl->num_entries;
+		if (new <= 0)
+			return (ISC_R_NOMEMORY);
+	}
+
+	/*
+	 * Log expansions so that the user can tune max-table-size
+	 * and min-table-size.
+	 */
+	if (isc_log_wouldlog(dns_lctx, DNS_RRL_LOG_DROP) &&
+	    rrl->hash != NULL) {
+		rate = rrl->probes;
+		if (rrl->searches != 0)
+			rate /= rrl->searches;
+		isc_log_write(dns_lctx, DNS_LOGCATEGORY_RRL,
+			      DNS_LOGMODULE_REQUEST, DNS_RRL_LOG_DROP,
+			      "increase from %d to %d RRL entries with"
+			      " %d bins; average search length %.1f",
+			      rrl->num_entries, rrl->num_entries+new,
+			      rrl->hash->length, rate);
+	}
+
+	bsize = sizeof(dns_rrl_block_t) + (new-1)*sizeof(dns_rrl_entry_t);
+	b = isc_mem_get(rrl->mctx, bsize);
+	if (b == NULL) {
+		isc_log_write(dns_lctx, DNS_LOGCATEGORY_RRL,
+			      DNS_LOGMODULE_REQUEST, DNS_RRL_LOG_FAIL,
+			      "isc_mem_get(%d) failed for RRL entries",
+			      bsize);
+		return (ISC_R_NOMEMORY);
+	}
+	memset(b, 0, bsize);
+	b->size = bsize;
+
+	e = b->entries;
+	for (i = 0; i < new; ++i, ++e) {
+		ISC_LINK_INIT(e, hlink);
+		ISC_LIST_INITANDAPPEND(rrl->lru, e, lru);
+	}
+	rrl->num_entries += new;
+	ISC_LIST_INITANDAPPEND(rrl->blocks, b, link);
+
+	return (ISC_R_SUCCESS);
+}
+
+static inline dns_rrl_bin_t *
+get_bin(dns_rrl_hash_t *hash, unsigned int hval) {
+	return (&hash->bins[hval % hash->length]);
+}
+
+static void
+free_old_hash(dns_rrl_t *rrl) {
+	dns_rrl_hash_t *old_hash;
+	dns_rrl_bin_t *old_bin;
+	dns_rrl_entry_t *e, *e_next;
+
+	old_hash = rrl->old_hash;
+	for (old_bin = &old_hash->bins[0];
+	     old_bin < &old_hash->bins[old_hash->length];
+	     ++old_bin)
+	{
+		for (e = ISC_LIST_HEAD(*old_bin); e != NULL; e = e_next) {
+			e_next = ISC_LIST_NEXT(e, hlink);
+			ISC_LINK_INIT(e, hlink);
+		}
+	}
+
+	isc_mem_put(rrl->mctx, old_hash,
+		    sizeof(*old_hash)
+		      + (old_hash->length - 1) * sizeof(old_hash->bins[0]));
+	rrl->old_hash = NULL;
+}
+
+static isc_result_t
+expand_rrl_hash(dns_rrl_t *rrl, isc_stdtime_t now) {
+	dns_rrl_hash_t *hash;
+	int old_bins, new_bins, hsize;
+	double rate;
+
+	if (rrl->old_hash != NULL)
+		free_old_hash(rrl);
+
+	/*
+	 * Most searches fail and so go to the end of the chain.
+	 * Use a small hash table load factor.
+	 */
+	old_bins = (rrl->hash == NULL) ? 0 : rrl->hash->length;
+	new_bins = old_bins/8 + old_bins;
+	if (new_bins < rrl->num_entries)
+		new_bins = rrl->num_entries;
+	new_bins = hash_divisor(new_bins);
+
+	hsize = sizeof(dns_rrl_hash_t) + (new_bins-1)*sizeof(hash->bins[0]);
+	hash = isc_mem_get(rrl->mctx, hsize);
+	if (hash == NULL) {
+		isc_log_write(dns_lctx, DNS_LOGCATEGORY_RRL,
+			      DNS_LOGMODULE_REQUEST, DNS_RRL_LOG_FAIL,
+			      "isc_mem_get(%d) failed for"
+			      " RRL hash table",
+			      hsize);
+		return (ISC_R_NOMEMORY);
+	}
+	memset(hash, 0, hsize);
+	hash->length = new_bins;
+	rrl->hash_gen ^= 1;
+	hash->gen = rrl->hash_gen;
+
+	if (isc_log_wouldlog(dns_lctx, DNS_RRL_LOG_DROP) && old_bins != 0) {
+		rate = rrl->probes;
+		if (rrl->searches != 0)
+			rate /= rrl->searches;
+		isc_log_write(dns_lctx, DNS_LOGCATEGORY_RRL,
+			      DNS_LOGMODULE_REQUEST, DNS_RRL_LOG_DROP,
+			      "increase from %d to %d RRL bins for"
+			      " %d entries; average search length %.1f",
+			      old_bins, new_bins, rrl->num_entries, rate);
+	}
+
+	rrl->old_hash = rrl->hash;
+	if (rrl->old_hash != NULL)
+		rrl->old_hash->check_time = now;
+	rrl->hash = hash;
+
+	return (ISC_R_SUCCESS);
+}
+
+static void
+ref_entry(dns_rrl_t *rrl, dns_rrl_entry_t *e, int probes, isc_stdtime_t now) {
+	/*
+	 * Make the entry most recently used.
+	 */
+	if (ISC_LIST_HEAD(rrl->lru) != e) {
+		if (e == rrl->last_logged)
+			rrl->last_logged = ISC_LIST_PREV(e, lru);
+		ISC_LIST_UNLINK(rrl->lru, e, lru);
+		ISC_LIST_PREPEND(rrl->lru, e, lru);
+	}
+
+	/*
+	 * Expand the hash table if it is time and necessary.
+	 * This will leave the newly referenced entry in a chain in the
+	 * old hash table.  It will migrate to the new hash table the next
+	 * time it is used or be cut loose when the old hash table is destroyed.
+	 */
+	rrl->probes += probes;
+	++rrl->searches;
+	if (rrl->searches > 100 &&
+	    delta_rrl_time(rrl->hash->check_time, now) > 1) {
+		if (rrl->probes/rrl->searches > 2)
+			expand_rrl_hash(rrl, now);
+		rrl->hash->check_time = now;
+		rrl->probes = 0;
+		rrl->searches = 0;
+	}
+}
+
+static inline isc_boolean_t
+key_cmp(const dns_rrl_key_t *a, const dns_rrl_key_t *b) {
+	if (memcmp(a, b, sizeof(dns_rrl_key_t)) == 0)
+		return (ISC_TRUE);
+	return (ISC_FALSE);
+}
+
+static inline isc_uint32_t
+hash_key(const dns_rrl_key_t *key) {
+	isc_uint32_t hval;
+	int i;
+
+	hval = key->w[0];
+	for (i = sizeof(*key) / sizeof(key->w[0]) - 1; i >= 0; --i) {
+		hval = key->w[i] + (hval<<1);
+	}
+	return (hval);
+}
+
+/*
+ * Construct the hash table key.
+ * Use a hash of the DNS query name to save space in the database.
+ * Collisions result in legitimate rate limiting responses for one
+ * query name also limiting responses for other names to the
+ * same client.  This is rare and benign enough given the large
+ * space costs compared to keeping the entire name in the database
+ * entry or the time costs of dynamic allocation.
+ */
+static void
+make_key(const dns_rrl_t *rrl, dns_rrl_key_t *key,
+	 const isc_sockaddr_t *client_addr,
+	 dns_rdatatype_t qtype, dns_name_t *qname, dns_rdataclass_t qclass,
+	 dns_rrl_rtype_t rtype)
+{
+	dns_name_t base;
+	dns_offsets_t base_offsets;
+	int labels, i;
+
+	memset(key, 0, sizeof(*key));
+
+	key->s.rtype = rtype;
+	if (rtype == DNS_RRL_RTYPE_QUERY) {
+		key->s.qtype = qtype;
+		key->s.qclass = qclass & 0xff;
+	} else if (rtype == DNS_RRL_RTYPE_REFERRAL ||
+		   rtype == DNS_RRL_RTYPE_NODATA) {
+		/*
+		 * Because there is no qtype in the empty answer sections of
+		 * referral and NODATA responses, count them as the same.
+		 */
+		key->s.qclass = qclass & 0xff;
+	}
+
+	if (qname != NULL && qname->labels != 0) {
+		/*
+		 * Ignore the first label of wildcards.
+		 */
+		if ((qname->attributes & DNS_NAMEATTR_WILDCARD) != 0 &&
+		    (labels = dns_name_countlabels(qname)) > 1)
+		{
+			dns_name_init(&base, base_offsets);
+			dns_name_getlabelsequence(qname, 1, labels-1, &base);
+			key->s.qname_hash = dns_name_hashbylabel(&base,
+							ISC_FALSE);
+		} else {
+			key->s.qname_hash = dns_name_hashbylabel(qname,
+							ISC_FALSE);
+		}
+	}
+
+	switch (client_addr->type.sa.sa_family) {
+	case AF_INET:
+		key->s.ip[0] = (client_addr->type.sin.sin_addr.s_addr &
+			      rrl->ipv4_mask);
+		break;
+	case AF_INET6:
+		key->s.ipv6 = ISC_TRUE;
+		memcpy(key->s.ip, &client_addr->type.sin6.sin6_addr,
+		       sizeof(key->s.ip));
+		for (i = 0; i < DNS_RRL_MAX_PREFIX/32; ++i)
+			key->s.ip[i] &= rrl->ipv6_mask[i];
+		break;
+	}
+}
+
+static inline dns_rrl_rate_t *
+get_rate(dns_rrl_t *rrl, dns_rrl_rtype_t rtype) {
+	switch (rtype) {
+	case DNS_RRL_RTYPE_QUERY:
+		return (&rrl->responses_per_second);
+	case DNS_RRL_RTYPE_REFERRAL:
+		return (&rrl->referrals_per_second);
+	case DNS_RRL_RTYPE_NODATA:
+		return (&rrl->nodata_per_second);
+	case DNS_RRL_RTYPE_NXDOMAIN:
+		return (&rrl->nxdomains_per_second);
+	case DNS_RRL_RTYPE_ERROR:
+		return (&rrl->errors_per_second);
+	case DNS_RRL_RTYPE_ALL:
+		return (&rrl->all_per_second);
+	default:
+		INSIST(0);
+	}
+	return (NULL);
+}
+
+static int
+response_balance(dns_rrl_t *rrl, const dns_rrl_entry_t *e, int age) {
+	dns_rrl_rate_t *ratep;
+	int balance, rate;
+
+	if (e->key.s.rtype == DNS_RRL_RTYPE_TCP) {
+		rate = 1;
+	} else {
+		ratep = get_rate(rrl, e->key.s.rtype);
+		rate = ratep->scaled;
+	}
+
+	balance = e->responses + age * rate;
+	if (balance > rate)
+		balance = rate;
+	return (balance);
+}
+
+/*
+ * Search for an entry for a response and optionally create it.
+ */
+static dns_rrl_entry_t *
+get_entry(dns_rrl_t *rrl, const isc_sockaddr_t *client_addr,
+	  dns_rdataclass_t qclass, dns_rdatatype_t qtype, dns_name_t *qname,
+	  dns_rrl_rtype_t rtype, isc_stdtime_t now, isc_boolean_t create,
+	  char *log_buf, unsigned int log_buf_len)
+{
+	dns_rrl_key_t key;
+	isc_uint32_t hval;
+	dns_rrl_entry_t *e;
+	dns_rrl_hash_t *hash;
+	dns_rrl_bin_t *new_bin, *old_bin;
+	int probes, age;
+
+	make_key(rrl, &key, client_addr, qtype, qname, qclass, rtype);
+	hval = hash_key(&key);
+
+	/*
+	 * Look for the entry in the current hash table.
+	 */
+	new_bin = get_bin(rrl->hash, hval);
+	probes = 1;
+	e = ISC_LIST_HEAD(*new_bin);
+	while (e != NULL) {
+		if (key_cmp(&e->key, &key)) {
+			ref_entry(rrl, e, probes, now);
+			return (e);
+		}
+		++probes;
+		e = ISC_LIST_NEXT(e, hlink);
+	}
+
+	/*
+	 * Look in the old hash table.
+	 */
+	if (rrl->old_hash != NULL) {
+		old_bin = get_bin(rrl->old_hash, hval);
+		e = ISC_LIST_HEAD(*old_bin);
+		while (e != NULL) {
+			if (key_cmp(&e->key, &key)) {
+				ISC_LIST_UNLINK(*old_bin, e, hlink);
+				ISC_LIST_PREPEND(*new_bin, e, hlink);
+				e->hash_gen = rrl->hash_gen;
+				ref_entry(rrl, e, probes, now);
+				return (e);
+			}
+			e = ISC_LIST_NEXT(e, hlink);
+		}
+
+		/*
+		 * Discard prevous hash table when all of its entries are old.
+		 */
+		age = delta_rrl_time(rrl->old_hash->check_time, now);
+		if (age > rrl->window)
+			free_old_hash(rrl);
+	}
+
+	if (!create)
+		return (NULL);
+
+	/*
+	 * The entry does not exist, so create it by finding a free entry.
+	 * Keep currently penalized and logged entries.
+	 * Try to make more entries if none are idle.
+	 * Steal the oldest entry if we cannot create more.
+	 */
+	for (e = ISC_LIST_TAIL(rrl->lru);
+	     e != NULL;
+	     e = ISC_LIST_PREV(e, lru))
+	{
+		if (!ISC_LINK_LINKED(e, hlink))
+			break;
+		age = get_age(rrl, e, now);
+		if (age <= 1) {
+			e = NULL;
+			break;
+		}
+		if (!e->logged && response_balance(rrl, e, age) > 0)
+			break;
+	}
+	if (e == NULL) {
+		expand_entries(rrl, ISC_MIN((rrl->num_entries+1)/2, 1000));
+		e = ISC_LIST_TAIL(rrl->lru);
+	}
+	if (e->logged)
+		log_end(rrl, e, ISC_TRUE, log_buf, log_buf_len);
+	if (ISC_LINK_LINKED(e, hlink)) {
+		if (e->hash_gen == rrl->hash_gen)
+			hash = rrl->hash;
+		else
+			hash = rrl->old_hash;
+		old_bin = get_bin(hash, hash_key(&e->key));
+		ISC_LIST_UNLINK(*old_bin, e, hlink);
+	}
+	ISC_LIST_PREPEND(*new_bin, e, hlink);
+	e->hash_gen = rrl->hash_gen;
+	e->key = key;
+	e->ts_valid = ISC_FALSE;
+	ref_entry(rrl, e, probes, now);
+	return (e);
+}
+
+static void
+debit_log(const dns_rrl_entry_t *e, int age, const char *action) {
+	char buf[sizeof("age=12345678")];
+	const char *age_str;
+
+	if (age == DNS_RRL_FOREVER) {
+		age_str = "";
+	} else {
+		snprintf(buf, sizeof(buf), "age=%d", age);
+		age_str = buf;
+	}
+	isc_log_write(dns_lctx, DNS_LOGCATEGORY_RRL,
+		      DNS_LOGMODULE_REQUEST, DNS_RRL_LOG_DEBUG3,
+		      "rrl %08x %6s  responses=%-3d %s",
+		      hash_key(&e->key), age_str, e->responses, action);
+}
+
+static inline dns_rrl_result_t
+debit_rrl_entry(dns_rrl_t *rrl, dns_rrl_entry_t *e, double qps, double scale,
+		const isc_sockaddr_t *client_addr, isc_stdtime_t now,
+		char *log_buf, unsigned int log_buf_len)
+{
+	int rate, new_rate, slip, new_slip, age, log_secs, min;
+	dns_rrl_rate_t *ratep;
+	dns_rrl_entry_t const *credit_e;
+
+	/*
+	 * Pick the rate counter.
+	 * Optionally adjust the rate by the estimated query/second rate.
+	 */
+	ratep = get_rate(rrl, e->key.s.rtype);
+	rate = ratep->r;
+	if (rate == 0)
+		return (DNS_RRL_RESULT_OK);
+
+	if (scale < 1.0) {
+		/*
+		 * The limit for clients that have used TCP is not scaled.
+		 */
+		credit_e = get_entry(rrl, client_addr,
+				     0, dns_rdatatype_none, NULL,
+				     DNS_RRL_RTYPE_TCP, now, ISC_FALSE,
+				     log_buf, log_buf_len);
+		if (credit_e != NULL) {
+			age = get_age(rrl, e, now);
+			if (age < rrl->window)
+				scale = 1.0;
+		}
+	}
+	if (scale < 1.0) {
+		new_rate = (int) (rate * scale);
+		if (new_rate < 1)
+			new_rate = 1;
+		if (ratep->scaled != new_rate) {
+			isc_log_write(dns_lctx, DNS_LOGCATEGORY_RRL,
+				      DNS_LOGMODULE_REQUEST,
+				      DNS_RRL_LOG_DEBUG1,
+				      "%d qps scaled %s by %.2f"
+				      " from %d to %d",
+				      (int)qps, ratep->str, scale,
+				      rate, new_rate);
+			rate = new_rate;
+			ratep->scaled = rate;
+		}
+	}
+
+	min = -rrl->window * rate;
+
+	/*
+	 * Treat time jumps into the recent past as no time.
+	 * Treat entries older than the window as if they were just created
+	 * Credit other entries.
+	 */
+	age = get_age(rrl, e, now);
+	if (age > 0) {
+		/*
+		 * Credit tokens earned during elapsed time.
+		 */
+		if (age > rrl->window) {
+			e->responses = rate;
+			e->slip_cnt = 0;
+		} else {
+			e->responses += rate*age;
+			if (e->responses > rate) {
+				e->responses = rate;
+				e->slip_cnt = 0;
+			}
+		}
+		/*
+		 * Find the seconds since last log message without overflowing
+		 * small counter.  This counter is reset when an entry is
+		 * created.  It is not necessarily reset when some requests
+		 * are answered provided other requests continue to be dropped
+		 * or slipped.  This can happen when the request rate is just
+		 * at the limit.
+		 */
+		if (e->logged) {
+			log_secs = e->log_secs;
+			log_secs += age;
+			if (log_secs > DNS_RRL_MAX_LOG_SECS || log_secs < 0)
+				log_secs = DNS_RRL_MAX_LOG_SECS;
+			e->log_secs = log_secs;
+		}
+	}
+	set_age(rrl, e, now);
+
+	/*
+	 * Debit the entry for this response.
+	 */
+	if (--e->responses >= 0) {
+		if (isc_log_wouldlog(dns_lctx, DNS_RRL_LOG_DEBUG3))
+			debit_log(e, age, "");
+		return (DNS_RRL_RESULT_OK);
+	}
+
+	if (e->responses < min)
+		e->responses = min;
+
+	/*
+	 * Drop this response unless it should slip or leak.
+	 */
+	slip = rrl->slip.r;
+	if (slip > 2 && scale < 1.0) {
+		new_slip = (int) (slip * scale);
+		if (new_slip < 2)
+			new_slip = 2;
+		if (rrl->slip.scaled != new_slip) {
+			isc_log_write(dns_lctx, DNS_LOGCATEGORY_RRL,
+				      DNS_LOGMODULE_REQUEST,
+				      DNS_RRL_LOG_DEBUG1,
+				      "%d qps scaled slip"
+				      " by %.2f from %d to %d",
+				      (int)qps, scale,
+				      slip, new_slip);
+			slip = new_slip;
+			rrl->slip.scaled = slip;
+		}
+	}
+	if (slip != 0 && e->key.s.rtype != DNS_RRL_RTYPE_ALL) {
+		if (e->slip_cnt++ == 0) {
+			if ((int) e->slip_cnt >= slip)
+				e->slip_cnt = 0;
+			if (isc_log_wouldlog(dns_lctx, DNS_RRL_LOG_DEBUG3))
+				debit_log(e, age, "slip");
+			return (DNS_RRL_RESULT_SLIP);
+		} else if ((int) e->slip_cnt >= slip) {
+			e->slip_cnt = 0;
+		}
+	}
+
+	if (isc_log_wouldlog(dns_lctx, DNS_RRL_LOG_DEBUG3))
+		debit_log(e, age, "drop");
+	return (DNS_RRL_RESULT_DROP);
+}
+
+static inline dns_rrl_qname_buf_t *
+get_qname(dns_rrl_t *rrl, const dns_rrl_entry_t *e) {
+	dns_rrl_qname_buf_t *qbuf;
+
+	qbuf = rrl->qnames[e->log_qname];
+	if (qbuf == NULL || qbuf->e != e)
+		return (NULL);
+	return (qbuf);
+}
+
+static inline void
+free_qname(dns_rrl_t *rrl, dns_rrl_entry_t *e) {
+	dns_rrl_qname_buf_t *qbuf;
+
+	qbuf = get_qname(rrl, e);
+	if (qbuf != NULL) {
+		qbuf->e = NULL;
+		ISC_LIST_APPEND(rrl->qname_free, qbuf, link);
+	}
+}
+
+static void
+add_log_str(isc_buffer_t *lb, const char *str, unsigned int str_len) {
+	isc_region_t region;
+
+	isc_buffer_availableregion(lb, &region);
+	if (str_len >= region.length) {
+		if (region.length <= 0)
+			return;
+		str_len = region.length;
+	}
+	memcpy(region.base, str, str_len);
+	isc_buffer_add(lb, str_len);
+}
+
+#define ADD_LOG_CSTR(eb, s) add_log_str(eb, s, sizeof(s)-1)
+
+/*
+ * Build strings for the logs
+ */
+static void
+make_log_buf(dns_rrl_t *rrl, dns_rrl_entry_t *e,
+	     const char *str1, const char *str2, isc_boolean_t plural,
+	     dns_name_t *qname, isc_boolean_t save_qname,
+	     dns_rrl_result_t rrl_result, isc_result_t resp_result,
+	     char *log_buf, unsigned int log_buf_len)
+{
+	isc_buffer_t lb;
+	dns_rrl_qname_buf_t *qbuf;
+	isc_netaddr_t cidr;
+	char strbuf[ISC_MAX(sizeof("/123"), sizeof("  (12345678)"))];
+	const char *rstr;
+	isc_result_t msg_result;
+
+	if (log_buf_len <= 1) {
+		if (log_buf_len == 1)
+			log_buf[0] = '\0';
+		return;
+	}
+	isc_buffer_init(&lb, log_buf, log_buf_len-1);
+
+	if (str1 != NULL)
+		add_log_str(&lb, str1, strlen(str1));
+	if (str2 != NULL)
+		add_log_str(&lb, str2, strlen(str2));
+
+	switch (rrl_result) {
+	case DNS_RRL_RESULT_OK:
+		break;
+	case DNS_RRL_RESULT_DROP:
+		ADD_LOG_CSTR(&lb, "drop ");
+		break;
+	case DNS_RRL_RESULT_SLIP:
+		ADD_LOG_CSTR(&lb, "slip ");
+		break;
+	default:
+		INSIST(0);
+		break;
+	}
+
+	switch (e->key.s.rtype) {
+	case DNS_RRL_RTYPE_QUERY:
+		break;
+	case DNS_RRL_RTYPE_REFERRAL:
+		ADD_LOG_CSTR(&lb, "referral ");
+		break;
+	case DNS_RRL_RTYPE_NODATA:
+		ADD_LOG_CSTR(&lb, "NODATA ");
+		break;
+	case DNS_RRL_RTYPE_NXDOMAIN:
+		ADD_LOG_CSTR(&lb, "NXDOMAIN ");
+		break;
+	case DNS_RRL_RTYPE_ERROR:
+		if (resp_result == ISC_R_SUCCESS) {
+			ADD_LOG_CSTR(&lb, "error ");
+		} else {
+			rstr = isc_result_totext(resp_result);
+			add_log_str(&lb, rstr, strlen(rstr));
+			ADD_LOG_CSTR(&lb, " error ");
+		}
+		break;
+	case DNS_RRL_RTYPE_ALL:
+		ADD_LOG_CSTR(&lb, "all ");
+		break;
+	default:
+		INSIST(0);
+	}
+
+	if (plural)
+		ADD_LOG_CSTR(&lb, "responses to ");
+	else
+		ADD_LOG_CSTR(&lb, "response to ");
+
+	memset(&cidr, 0, sizeof(cidr));
+	if (e->key.s.ipv6) {
+		snprintf(strbuf, sizeof(strbuf), "/%d", rrl->ipv6_prefixlen);
+		cidr.family = AF_INET6;
+		memset(&cidr.type.in6, 0,  sizeof(cidr.type.in6));
+		memcpy(&cidr.type.in6, e->key.s.ip, sizeof(e->key.s.ip));
+	} else {
+		snprintf(strbuf, sizeof(strbuf), "/%d", rrl->ipv4_prefixlen);
+		cidr.family = AF_INET;
+		cidr.type.in.s_addr = e->key.s.ip[0];
+	}
+	msg_result = isc_netaddr_totext(&cidr, &lb);
+	if (msg_result != ISC_R_SUCCESS)
+		ADD_LOG_CSTR(&lb, "?");
+	add_log_str(&lb, strbuf, strlen(strbuf));
+
+	if (e->key.s.rtype == DNS_RRL_RTYPE_QUERY ||
+	    e->key.s.rtype == DNS_RRL_RTYPE_REFERRAL ||
+	    e->key.s.rtype == DNS_RRL_RTYPE_NODATA ||
+	    e->key.s.rtype == DNS_RRL_RTYPE_NXDOMAIN) {
+		qbuf = get_qname(rrl, e);
+		if (save_qname && qbuf == NULL &&
+		    qname != NULL && dns_name_isabsolute(qname)) {
+			/*
+			 * Capture the qname for the "stop limiting" message.
+			 */
+			qbuf = ISC_LIST_TAIL(rrl->qname_free);
+			if (qbuf != NULL) {
+				ISC_LIST_UNLINK(rrl->qname_free, qbuf, link);
+			} else if (rrl->num_qnames < DNS_RRL_QNAMES) {
+				qbuf = isc_mem_get(rrl->mctx, sizeof(*qbuf));
+				if (qbuf != NULL) {
+					memset(qbuf, 0, sizeof(*qbuf));
+					ISC_LINK_INIT(qbuf, link);
+					qbuf->index = rrl->num_qnames;
+					rrl->qnames[rrl->num_qnames++] = qbuf;
+				} else {
+					isc_log_write(dns_lctx,
+						      DNS_LOGCATEGORY_RRL,
+						      DNS_LOGMODULE_REQUEST,
+						      DNS_RRL_LOG_FAIL,
+						      "isc_mem_get(%d)"
+						      " failed for RRL qname",
+						      (int)sizeof(*qbuf));
+				}
+			}
+			if (qbuf != NULL) {
+				e->log_qname = qbuf->index;
+				qbuf->e = e;
+				dns_fixedname_init(&qbuf->qname);
+				dns_name_copy(qname,
+					      dns_fixedname_name(&qbuf->qname),
+					      NULL);
+			}
+		}
+		if (qbuf != NULL)
+			qname = dns_fixedname_name(&qbuf->qname);
+		if (qname != NULL) {
+			ADD_LOG_CSTR(&lb, " for ");
+			(void)dns_name_totext(qname, ISC_TRUE, &lb);
+		} else {
+			ADD_LOG_CSTR(&lb, " for (?)");
+		}
+		if (e->key.s.rtype != DNS_RRL_RTYPE_NXDOMAIN) {
+			ADD_LOG_CSTR(&lb, " ");
+			(void)dns_rdataclass_totext(e->key.s.qclass, &lb);
+			if (e->key.s.rtype == DNS_RRL_RTYPE_QUERY) {
+				ADD_LOG_CSTR(&lb, " ");
+				(void)dns_rdatatype_totext(e->key.s.qtype, &lb);
+			}
+		}
+		snprintf(strbuf, sizeof(strbuf), "  (%08x)",
+			 e->key.s.qname_hash);
+		add_log_str(&lb, strbuf, strlen(strbuf));
+	}
+
+	/*
+	 * We saved room for '\0'.
+	 */
+	log_buf[isc_buffer_usedlength(&lb)] = '\0';
+}
+
+static void
+log_end(dns_rrl_t *rrl, dns_rrl_entry_t *e, isc_boolean_t early,
+	char *log_buf, unsigned int log_buf_len)
+{
+	if (e->logged) {
+		make_log_buf(rrl, e,
+			     early ? "*" : NULL,
+			     rrl->log_only ? "would stop limiting "
+					   : "stop limiting ",
+			     ISC_TRUE, NULL, ISC_FALSE,
+			     DNS_RRL_RESULT_OK, ISC_R_SUCCESS,
+			     log_buf, log_buf_len);
+		isc_log_write(dns_lctx, DNS_LOGCATEGORY_RRL,
+			      DNS_LOGMODULE_REQUEST, DNS_RRL_LOG_DROP,
+			      "%s", log_buf);
+		free_qname(rrl, e);
+		e->logged = ISC_FALSE;
+		--rrl->num_logged;
+	}
+}
+
+/*
+ * Log messages for streams that have stopped being rate limited.
+ */
+static void
+log_stops(dns_rrl_t *rrl, isc_stdtime_t now, int limit,
+	  char *log_buf, unsigned int log_buf_len)
+{
+	dns_rrl_entry_t *e;
+	int age;
+
+	for (e = rrl->last_logged; e != NULL; e = ISC_LIST_PREV(e, lru)) {
+		if (!e->logged)
+			continue;
+		if (now != 0) {
+			age = get_age(rrl, e, now);
+			if (age < DNS_RRL_STOP_LOG_SECS ||
+			    response_balance(rrl, e, age) < 0)
+				break;
+		}
+
+		log_end(rrl, e, now == 0, log_buf, log_buf_len);
+		if (rrl->num_logged <= 0)
+			break;
+
+		/*
+		 * Too many messages could stall real work.
+		 */
+		if (--limit < 0) {
+			rrl->last_logged = ISC_LIST_PREV(e, lru);
+			return;
+		}
+	}
+	if (e == NULL) {
+		INSIST(rrl->num_logged == 0);
+		rrl->log_stops_time = now;
+	}
+	rrl->last_logged = e;
+}
+
+/*
+ * Main rate limit interface.
+ */
+dns_rrl_result_t
+dns_rrl(dns_view_t *view,
+	const isc_sockaddr_t *client_addr, isc_boolean_t is_tcp,
+	dns_rdataclass_t qclass, dns_rdatatype_t qtype,
+	dns_name_t *qname, isc_result_t resp_result, isc_stdtime_t now,
+	isc_boolean_t wouldlog, char *log_buf, unsigned int log_buf_len)
+{
+	dns_rrl_t *rrl;
+	dns_rrl_rtype_t rtype;
+	dns_rrl_entry_t *e;
+	isc_netaddr_t netclient;
+	int secs;
+	double qps, scale;
+	int exempt_match;
+	isc_result_t result;
+	dns_rrl_result_t rrl_result;
+
+	INSIST(log_buf != NULL && log_buf_len > 0);
+
+	rrl = view->rrl;
+	if (rrl->exempt != NULL) {
+		isc_netaddr_fromsockaddr(&netclient, client_addr);
+		result = dns_acl_match(&netclient, NULL, rrl->exempt,
+				       &view->aclenv, &exempt_match, NULL);
+		if (result == ISC_R_SUCCESS && exempt_match > 0)
+			return (DNS_RRL_RESULT_OK);
+	}
+
+	LOCK(&rrl->lock);
+
+	/*
+	 * Estimate total query per second rate when scaling by qps.
+	 */
+	if (rrl->qps_scale == 0) {
+		qps = 0.0;
+		scale = 1.0;
+	} else {
+		++rrl->qps_responses;
+		secs = delta_rrl_time(rrl->qps_time, now);
+		if (secs <= 0) {
+			qps = rrl->qps;
+		} else {
+			qps = (1.0*rrl->qps_responses) / secs;
+			if (secs >= rrl->window) {
+				if (isc_log_wouldlog(dns_lctx,
+						     DNS_RRL_LOG_DEBUG3))
+					isc_log_write(dns_lctx,
+						      DNS_LOGCATEGORY_RRL,
+						      DNS_LOGMODULE_REQUEST,
+						      DNS_RRL_LOG_DEBUG3,
+						      "%d responses/%d seconds"
+						      " = %d qps",
+						      rrl->qps_responses, secs,
+						      (int)qps);
+				rrl->qps = qps;
+				rrl->qps_responses = 0;
+				rrl->qps_time = now;
+			} else if (qps < rrl->qps) {
+				qps = rrl->qps;
+			}
+		}
+		scale = rrl->qps_scale / qps;
+	}
+
+	/*
+	 * Do maintenance once per second.
+	 */
+	if (rrl->num_logged > 0 && rrl->log_stops_time != now)
+		log_stops(rrl, now, 8, log_buf, log_buf_len);
+
+	/*
+	 * Notice TCP responses when scaling limits by qps.
+	 * Do not try to rate limit TCP responses.
+	 */
+	if (is_tcp) {
+		if (scale < 1.0) {
+			e = get_entry(rrl, client_addr,
+				      0, dns_rdatatype_none, NULL,
+				      DNS_RRL_RTYPE_TCP, now, ISC_TRUE,
+				      log_buf, log_buf_len);
+			if (e != NULL) {
+				e->responses = -(rrl->window+1);
+				set_age(rrl, e, now);
+			}
+		}
+		UNLOCK(&rrl->lock);
+		return (ISC_R_SUCCESS);
+	}
+
+	/*
+	 * Find the right kind of entry, creating it if necessary.
+	 * If that is impossible, then nothing more can be done
+	 */
+	switch (resp_result) {
+	case ISC_R_SUCCESS:
+		rtype = DNS_RRL_RTYPE_QUERY;
+		break;
+	case DNS_R_DELEGATION:
+		rtype = DNS_RRL_RTYPE_REFERRAL;
+		break;
+	case DNS_R_NXRRSET:
+		rtype = DNS_RRL_RTYPE_NODATA;
+		break;
+	case DNS_R_NXDOMAIN:
+		rtype = DNS_RRL_RTYPE_NXDOMAIN;
+		break;
+	default:
+		rtype = DNS_RRL_RTYPE_ERROR;
+		break;
+	}
+	e = get_entry(rrl, client_addr, qclass, qtype, qname, rtype,
+		      now, ISC_TRUE, log_buf, log_buf_len);
+	if (e == NULL) {
+		UNLOCK(&rrl->lock);
+		return (DNS_RRL_RESULT_OK);
+	}
+
+	if (isc_log_wouldlog(dns_lctx, DNS_RRL_LOG_DEBUG1)) {
+		/*
+		 * Do not worry about speed or releasing the lock.
+		 * This message appears before messages from debit_rrl_entry().
+		 */
+		make_log_buf(rrl, e, "consider limiting ", NULL, ISC_FALSE,
+			     qname, ISC_FALSE, DNS_RRL_RESULT_OK, resp_result,
+			     log_buf, log_buf_len);
+		isc_log_write(dns_lctx, DNS_LOGCATEGORY_RRL,
+			      DNS_LOGMODULE_REQUEST, DNS_RRL_LOG_DEBUG1,
+			      "%s", log_buf);
+	}
+
+	rrl_result = debit_rrl_entry(rrl, e, qps, scale, client_addr, now,
+				     log_buf, log_buf_len);
+
+	if (rrl->all_per_second.r != 0) {
+		/*
+		 * We must debit the all-per-second token bucket if we have
+		 * an all-per-second limit for the IP address.
+		 * The all-per-second limit determines the log message
+		 * when both limits are hit.
+		 * The response limiting must continue if the
+		 * all-per-second limiting lapses.
+		 */
+		dns_rrl_entry_t *e_all;
+		dns_rrl_result_t rrl_all_result;
+
+		e_all = get_entry(rrl, client_addr,
+				  0, dns_rdatatype_none, NULL,
+				  DNS_RRL_RTYPE_ALL, now, ISC_TRUE,
+				  log_buf, log_buf_len);
+		if (e_all == NULL) {
+			UNLOCK(&rrl->lock);
+			return (DNS_RRL_RESULT_OK);
+		}
+		rrl_all_result = debit_rrl_entry(rrl, e_all, qps, scale,
+						 client_addr, now,
+						 log_buf, log_buf_len);
+		if (rrl_all_result != DNS_RRL_RESULT_OK) {
+			int level;
+
+			e = e_all;
+			rrl_result = rrl_all_result;
+			if (rrl_result == DNS_RRL_RESULT_OK)
+				level = DNS_RRL_LOG_DEBUG2;
+			else
+				level = DNS_RRL_LOG_DEBUG1;
+			if (isc_log_wouldlog(dns_lctx, level)) {
+				make_log_buf(rrl, e,
+					     "prefer all-per-second limiting ",
+					     NULL, ISC_TRUE, qname, ISC_FALSE,
+					     DNS_RRL_RESULT_OK, resp_result,
+					     log_buf, log_buf_len);
+				isc_log_write(dns_lctx, DNS_LOGCATEGORY_RRL,
+					      DNS_LOGMODULE_REQUEST, level,
+					      "%s", log_buf);
+			}
+		}
+	}
+
+	if (rrl_result == DNS_RRL_RESULT_OK) {
+		UNLOCK(&rrl->lock);
+		return (DNS_RRL_RESULT_OK);
+	}
+
+	/*
+	 * Log occassionally in the rate-limit category.
+	 */
+	if ((!e->logged || e->log_secs >= DNS_RRL_MAX_LOG_SECS) &&
+	    isc_log_wouldlog(dns_lctx, DNS_RRL_LOG_DROP)) {
+		make_log_buf(rrl, e, rrl->log_only ? "would " : NULL,
+			     e->logged ? "continue limiting " : "limit ",
+			     ISC_TRUE, qname, ISC_TRUE,
+			     DNS_RRL_RESULT_OK, resp_result,
+			     log_buf, log_buf_len);
+		if (!e->logged) {
+			e->logged = ISC_TRUE;
+			if (++rrl->num_logged <= 1)
+				rrl->last_logged = e;
+		}
+		e->log_secs = 0;
+
+		/*
+		 * Avoid holding the lock.
+		 */
+		if (!wouldlog) {
+			UNLOCK(&rrl->lock);
+			e = NULL;
+		}
+		isc_log_write(dns_lctx, DNS_LOGCATEGORY_RRL,
+			      DNS_LOGMODULE_REQUEST, DNS_RRL_LOG_DROP,
+			      "%s", log_buf);
+	}
+
+	/*
+	 * Make a log message for the caller.
+	 */
+	if (wouldlog)
+		make_log_buf(rrl, e,
+			     rrl->log_only ? "would rate limit " : "rate limit ",
+			     NULL, ISC_FALSE, qname, ISC_FALSE,
+			     rrl_result, resp_result, log_buf, log_buf_len);
+
+	if (e != NULL) {
+		/*
+		 * Do not save the qname unless we might need it for
+		 * the ending log message.
+		 */
+		if (!e->logged)
+			free_qname(rrl, e);
+		UNLOCK(&rrl->lock);
+	}
+
+	return (rrl_result);
+}
+
+void
+dns_rrl_view_destroy(dns_view_t *view) {
+	dns_rrl_t *rrl;
+	dns_rrl_block_t *b;
+	dns_rrl_hash_t *h;
+	char log_buf[DNS_RRL_LOG_BUF_LEN];
+	int i;
+
+	rrl = view->rrl;
+	if (rrl == NULL)
+		return;
+	view->rrl = NULL;
+
+	/*
+	 * Assume the caller takes care of locking the view and anything else.
+	 */
+
+	if (rrl->num_logged > 0)
+		log_stops(rrl, 0, ISC_INT32_MAX, log_buf, sizeof(log_buf));
+
+	for (i = 0; i < DNS_RRL_QNAMES; ++i) {
+		if (rrl->qnames[i] == NULL)
+			break;
+		isc_mem_put(rrl->mctx, rrl->qnames[i], sizeof(*rrl->qnames[i]));
+	}
+
+	if (rrl->exempt != NULL)
+		dns_acl_detach(&rrl->exempt);
+
+	DESTROYLOCK(&rrl->lock);
+
+	while (!ISC_LIST_EMPTY(rrl->blocks)) {
+		b = ISC_LIST_HEAD(rrl->blocks);
+		ISC_LIST_UNLINK(rrl->blocks, b, link);
+		isc_mem_put(rrl->mctx, b, b->size);
+	}
+
+	h = rrl->hash;
+	if (h != NULL)
+		isc_mem_put(rrl->mctx, h,
+			    sizeof(*h) + (h->length - 1) * sizeof(h->bins[0]));
+
+	h = rrl->old_hash;
+	if (h != NULL)
+		isc_mem_put(rrl->mctx, h,
+			    sizeof(*h) + (h->length - 1) * sizeof(h->bins[0]));
+
+	isc_mem_putanddetach(&rrl->mctx, rrl, sizeof(*rrl));
+}
+
+isc_result_t
+dns_rrl_init(dns_rrl_t **rrlp, dns_view_t *view, int min_entries) {
+	dns_rrl_t *rrl;
+	isc_result_t result;
+
+	*rrlp = NULL;
+
+	rrl = isc_mem_get(view->mctx, sizeof(*rrl));
+	if (rrl == NULL)
+		return (ISC_R_NOMEMORY);
+	memset(rrl, 0, sizeof(*rrl));
+	isc_mem_attach(view->mctx, &rrl->mctx);
+	result = isc_mutex_init(&rrl->lock);
+	if (result != ISC_R_SUCCESS) {
+		isc_mem_putanddetach(&rrl->mctx, rrl, sizeof(*rrl));
+		return (result);
+	}
+	isc_stdtime_get(&rrl->ts_bases[0]);
+
+	view->rrl = rrl;
+
+	result = expand_entries(rrl, min_entries);
+	if (result != ISC_R_SUCCESS) {
+		dns_rrl_view_destroy(view);
+		return (result);
+	}
+	result = expand_rrl_hash(rrl, 0);
+	if (result != ISC_R_SUCCESS) {
+		dns_rrl_view_destroy(view);
+		return (result);
+	}
+
+	*rrlp = rrl;
+	return (ISC_R_SUCCESS);
+}
diff -r -u lib/dns/view.c-orig lib/dns/view.c
--- lib/dns/view.c-orig	2004-01-01 00:00:00.000000000 +0000
+++ lib/dns/view.c	2004-01-01 00:00:00.000000000 +0000
@@ -49,6 +49,7 @@
 #include <dns/masterdump.h>
 #include <dns/order.h>
 #include <dns/peer.h>
+#include <dns/rrl.h>
 #include <dns/rbt.h>
 #include <dns/rdataset.h>
 #include <dns/request.h>
@@ -184,6 +185,7 @@
 	view->answeracl_exclude = NULL;
 	view->denyanswernames = NULL;
 	view->answernames_exclude = NULL;
+	view->rrl = NULL;
 	view->provideixfr = ISC_TRUE;
 	view->maxcachettl = 7 * 24 * 3600;
 	view->maxncachettl = 3 * 3600;
@@ -195,9 +197,7 @@
 	view->maxbits = 0;
 	view->v4_aaaa = dns_v4_aaaa_ok;
 	view->v4_aaaa_acl = NULL;
-	ISC_LIST_INIT(view->rpz_zones);
-	view->rpz_recursive_only = ISC_TRUE;
-	view->rpz_break_dnssec = ISC_FALSE;
+	view->rpzs = NULL;
 	dns_fixedname_init(&view->dlv_fixed);
 	view->managed_keys = NULL;
 	view->redirect = NULL;
@@ -334,10 +334,13 @@
 			dns_acache_putdb(view->acache, view->cachedb);
 		dns_acache_detach(&view->acache);
 	}
-	dns_rpz_view_destroy(view);
+	if (view->rpzs != NULL)
+		dns_rpz_detach_rpzs(&view->rpzs);
+	dns_rrl_view_destroy(view);
 #else
 	INSIST(view->acache == NULL);
-	INSIST(ISC_LIST_EMPTY(view->rpz_zones));
+  	INSIST(view->rpzs == NULL);
+	INSIST(view->rrl == NULL);
 #endif
 	if (view->requestmgr != NULL)
 		dns_requestmgr_detach(&view->requestmgr);
diff -r -u lib/dns/win32/libdns.def-orig lib/dns/win32/libdns.def
--- lib/dns/win32/libdns.def-orig	2004-01-01 00:00:00.000000000 +0000
+++ lib/dns/win32/libdns.def	2004-01-01 00:00:00.000000000 +0000
@@ -130,8 +130,8 @@
 dns_db_overmem
 dns_db_printnode
 dns_db_register
-dns_db_rpz_enabled
-dns_db_rpz_findips
+dns_db_rpz_attach
+dns_db_rpz_ready
 dns_db_subtractrdataset
 dns_db_unregister
 dns_dbiterator_current
@@ -639,17 +639,22 @@
 dns_result_torcode
 dns_result_totext
 dns_rootns_create
+dns_rpz_add
+dns_rpz_attach_rpzs
+dns_rpz_beginload
 dns_rpz_cidr_addip
-dns_rpz_cidr_deleteip
 dns_rpz_cidr_find
-dns_rpz_cidr_free
 dns_rpz_decode_cname
-dns_rpz_enabled_get
-dns_rpz_new_cidr
+dns_rpz_delete
+dns_rpz_delete_node
+dns_rpz_detach_rpzs
+dns_rpz_find_ip
+dns_rpz_find_name
+dns_rpz_new_zones
 dns_rpz_policy2str
+dns_rpz_ready
 dns_rpz_str2policy
 dns_rpz_type2str
-dns_rpz_view_destroy
 dns_rriterator_current
 dns_rriterator_destroy
 dns_rriterator_first
@@ -657,6 +662,9 @@
 dns_rriterator_next
 dns_rriterator_nextrrset
 dns_rriterator_pause
+dns_rrl
+dns_rrl_init
+dns_rrl_view_destroy
 dns_sdb_putnamedrr
 dns_sdb_putrdata
 dns_sdb_putrr
@@ -806,7 +814,7 @@
 dns_zone_forcereload
 dns_zone_forwardupdate
 dns_zone_fulldumptostream
-dns_zone_get_rpz
+dns_zone_get_rpz_num
 dns_zone_getadded
 dns_zone_getchecknames
 dns_zone_getclass
@@ -834,6 +842,7 @@
 dns_zone_getqueryonacl
 dns_zone_getraw
 dns_zone_getrequeststats
+dns_zone_getrpz_num
 dns_zone_getserial
 dns_zone_getserial2
 dns_zone_getserialupdatemethod
@@ -871,6 +880,7 @@
 dns_zone_refresh
 dns_zone_rekey
 dns_zone_replacedb
+dns_zone_rpz_attach
 dns_zone_rpz_enable
 dns_zone_setacache
 dns_zone_setadded
diff -r -u lib/dns/win32/libdns.dsp-orig lib/dns/win32/libdns.dsp
--- lib/dns/win32/libdns.dsp-orig	2004-01-01 00:00:00.000000000 +0000
+++ lib/dns/win32/libdns.dsp	2004-01-01 00:00:00.000000000 +0000
@@ -346,6 +346,10 @@
 # End Source File
 # Begin Source File
 
+SOURCE=..\include\dns\rrl.h
+# End Source File
+# Begin Source File
+
 SOURCE=..\include\dns\rriterator.h
 # End Source File
 # Begin Source File
@@ -650,6 +654,10 @@
 # End Source File
 # Begin Source File
 
+SOURCE=..\rrl.c
+# End Source File
+# Begin Source File
+
 SOURCE=..\rriterator.c
 # End Source File
 # Begin Source File
diff -r -u lib/dns/win32/libdns.mak-orig lib/dns/win32/libdns.mak
--- lib/dns/win32/libdns.mak-orig	2004-01-01 00:00:00.000000000 +0000
+++ lib/dns/win32/libdns.mak	2004-01-01 00:00:00.000000000 +0000
@@ -184,6 +184,7 @@
 	-@erase "$(INTDIR)\result.obj"
 	-@erase "$(INTDIR)\rootns.obj"
 	-@erase "$(INTDIR)\rpz.obj"
+	-@erase "$(INTDIR)\rrl.obj"
 	-@erase "$(INTDIR)\sdb.obj"
 	-@erase "$(INTDIR)\sdlz.obj"
 	-@erase "$(INTDIR)\soa.obj"
@@ -309,6 +310,7 @@
 	"$(INTDIR)\result.obj" \
 	"$(INTDIR)\rootns.obj" \
 	"$(INTDIR)\rpz.obj" \
+	"$(INTDIR)\rrl.obj" \
 	"$(INTDIR)\rriterator.obj" \
 	"$(INTDIR)\sdb.obj" \
 	"$(INTDIR)\sdlz.obj" \
@@ -505,6 +507,8 @@
 	-@erase "$(INTDIR)\rootns.sbr"
 	-@erase "$(INTDIR)\rpz.obj"
 	-@erase "$(INTDIR)\rpz.sbr"
+	-@erase "$(INTDIR)\rrl.obj"
+	-@erase "$(INTDIR)\rrl.sbr"
 	-@erase "$(INTDIR)\rriterator.obj"
 	-@erase "$(INTDIR)\rriterator.sbr"
 	-@erase "$(INTDIR)\sdb.obj"
@@ -651,6 +655,7 @@
 	"$(INTDIR)\result.sbr" \
 	"$(INTDIR)\rootns.sbr" \
 	"$(INTDIR)\rpz.sbr" \
+	"$(INTDIR)\rrl.sbr" \
 	"$(INTDIR)\rriterator.sbr" \
 	"$(INTDIR)\sdb.sbr" \
 	"$(INTDIR)\sdlz.sbr" \
@@ -748,6 +753,7 @@
 	"$(INTDIR)\result.obj" \
 	"$(INTDIR)\rootns.obj" \
 	"$(INTDIR)\rpz.obj" \
+	"$(INTDIR)\rrl.obj" \
 	"$(INTDIR)\rriterator.obj" \
 	"$(INTDIR)\sdb.obj" \
 	"$(INTDIR)\sdlz.obj" \
@@ -1726,6 +1732,24 @@
 
 !ENDIF 
 
+SOURCE=..\rrl.c
+
+!IF  "$(CFG)" == "libdns - Win32 Release"
+
+
+"$(INTDIR)\rrl.obj" : $(SOURCE) "$(INTDIR)"
+	$(CPP) $(CPP_PROJ) $(SOURCE)
+
+
+!ELSEIF  "$(CFG)" == "libdns - Win32 Debug"
+
+
+"$(INTDIR)\rrl.obj"	"$(INTDIR)\rrl.sbr" : $(SOURCE) "$(INTDIR)"
+	$(CPP) $(CPP_PROJ) $(SOURCE)
+
+
+!ENDIF 
+
 SOURCE=..\rriterator.c
 
 !IF  "$(CFG)" == "libdns - Win32 Release"
diff -r -u lib/dns/zone.c-orig lib/dns/zone.c
--- lib/dns/zone.c-orig	2004-01-01 00:00:00.000000000 +0000
+++ lib/dns/zone.c	2004-01-01 00:00:00.000000000 +0000
@@ -346,9 +346,10 @@
 	isc_boolean_t           added;
 
 	/*%
-	 * whether this is a response policy zone
+	 * response policy data to be relayed to the database
 	 */
-	isc_boolean_t           is_rpz;
+	dns_rpz_zones_t		*rpzs;
+	dns_rpz_num_t		rpz_num;
 
 	/*%
 	 * Serial number update method.
@@ -917,7 +918,8 @@
 	zone->nodes = 100;
 	zone->privatetype = (dns_rdatatype_t)0xffffU;
 	zone->added = ISC_FALSE;
-	zone->is_rpz = ISC_FALSE;
+	zone->rpzs = NULL;
+	zone->rpz_num = DNS_RPZ_INVALID_NUM;
 	ISC_LIST_INIT(zone->forwards);
 	zone->raw = NULL;
 	zone->secure = NULL;
@@ -1021,6 +1023,13 @@
 		zone_detachdb(zone);
 	if (zone->acache != NULL)
 		dns_acache_detach(&zone->acache);
+#ifdef BIND9
+	if (zone->rpzs != NULL) {
+		REQUIRE(zone->rpz_num < zone->rpzs->p.num_zones);
+		dns_rpz_detach_rpzs(&zone->rpzs);
+		zone->rpz_num = DNS_RPZ_INVALID_NUM;
+	}
+#endif
 	zone_freedbargs(zone);
 	RUNTIME_CHECK(dns_zone_setmasterswithkeys(zone, NULL, NULL, 0)
 		      == ISC_R_SUCCESS);
@@ -1513,7 +1522,9 @@
  * Set the response policy index and information for a zone.
  */
 isc_result_t
-dns_zone_rpz_enable(dns_zone_t *zone) {
+dns_zone_rpz_enable(dns_zone_t *zone, dns_rpz_zones_t *rpzs,
+		    dns_rpz_num_t rpz_num)
+{
 	/*
 	 * Only RBTDB zones can be used for response policy zones,
 	 * because only they have the code to load the create the summary data.
@@ -1524,14 +1535,26 @@
 	    strcmp(zone->db_argv[0], "rbt64") != 0)
 		return (ISC_R_NOTIMPLEMENTED);
 
-	zone->is_rpz = ISC_TRUE;
+	/*
+	 * This must happen only once or be redundant.
+	 */
+	LOCK_ZONE(zone);
+	if (zone->rpzs != NULL) {
+		REQUIRE(zone->rpzs == rpzs && zone->rpz_num == rpz_num);
+	} else {
+		REQUIRE(zone->rpz_num == DNS_RPZ_INVALID_NUM);
+		dns_rpz_attach_rpzs(rpzs, &zone->rpzs);
+		zone->rpz_num = rpz_num;
+	}
+	rpzs->defined |= DNS_RPZ_ZBIT(rpz_num);
+	UNLOCK_ZONE(zone);
 
 	return (ISC_R_SUCCESS);
 }
 
-isc_boolean_t
-dns_zone_get_rpz(dns_zone_t *zone) {
-	return (zone->is_rpz);
+dns_rpz_num_t
+dns_zone_get_rpz_num(dns_zone_t *zone) {
+	return (zone->rpz_num);
 }
 
 static isc_result_t
@@ -1988,10 +2011,9 @@
 	unsigned int options;
 
 #ifdef BIND9
-	if (zone->is_rpz) {
-		result = dns_db_rpz_enabled(db, NULL);
-		if (result != ISC_R_SUCCESS)
-			return (result);
+	if (zone->rpz_num != DNS_RPZ_INVALID_NUM) {
+		REQUIRE(zone->rpzs != NULL);
+		dns_db_rpz_attach(db, zone->rpzs, zone->rpz_num);
 	}
 #endif
 
@@ -4120,6 +4142,11 @@
 		if (result != ISC_R_SUCCESS)
 			goto cleanup;
 	} else {
+#ifdef BIND9
+		result = dns_db_rpz_ready(db);
+		if (result != ISC_R_SUCCESS)
+			goto cleanup;
+#endif
 		zone_attachdb(zone, db);
 		ZONEDB_UNLOCK(&zone->dblock, isc_rwlocktype_write);
 		DNS_ZONE_SETFLAG(zone,
@@ -13047,6 +13074,12 @@
 	REQUIRE(DNS_ZONE_VALID(zone));
 	REQUIRE(LOCKED_ZONE(zone));
 
+#ifdef BIND9
+	result = dns_db_rpz_ready(db);
+	if (result != ISC_R_SUCCESS)
+		return (result);
+#endif
+
 	result = zone_get_from_db(zone, db, &nscount, &soacount,
 				  NULL, NULL, NULL, NULL, NULL, NULL);
 	if (result == ISC_R_SUCCESS) {
diff -r -u lib/isccfg/namedconf.c-orig lib/isccfg/namedconf.c
--- lib/isccfg/namedconf.c-orig	2004-01-01 00:00:00.000000000 +0000
+++ lib/isccfg/namedconf.c	2004-01-01 00:00:00.000000000 +0000
@@ -1054,11 +1054,12 @@
 
 /*%
  *  response-policy {
- *	zone <string> [ policy (given|disabled|passthru|
+ *	zone <string> [ policy (given|disabled|passthru|drop|
  *					nxdomain|nodata|cname <domain> ) ]
  *		      [ recursive-only yes|no ] [ max-policy-ttl number ] ;
  *  } [ recursive-only yes|no ] [ max-policy-ttl number ] ;
- *	 [ break-dnssec yes|no ] [ min-ns-dots number ] ;
+ *	 [ break-dnssec yes|no ] [ min-ns-dots number ]
+ *	 [ qname-wait-recurse yes|no ]
  */
 
 static void
@@ -1083,7 +1084,7 @@
 
 /*
  * Parse
- *	given|disabled|passthru|nxdomain|nodata|cname <domain>
+ *	given|disabled|passthru|drop|nxdomain|nodata|cname <domain>
  */
 static isc_result_t
 cfg_parse_rpz_policy(cfg_parser_t *pctx, const cfg_type_t *type,
@@ -1214,8 +1215,11 @@
 	doc_keyvalue, &cfg_rep_string,
 	&zone_kw
 };
+/*
+ * "no-op" is an obsolete equivalent of "passthru".
+ */
 static const char *rpz_policies[] = {
-	"given", "disabled", "passthru", "no-op", "nxdomain", "nodata",
+	"given", "disabled", "passthru", "no-op", "drop", "nxdomain", "nodata",
 	"cname", NULL
 };
 static cfg_type_t cfg_type_rpz_policy_name = {
@@ -1261,6 +1265,7 @@
 	{ "break-dnssec", &cfg_type_boolean, 0 },
 	{ "max-policy-ttl", &cfg_type_uint32, 0 },
 	{ "min-ns-dots", &cfg_type_uint32, 0 },
+	{ "qname-wait-recurse", &cfg_type_boolean, 0 },
 	{ NULL, NULL, 0 }
 };
 static cfg_type_t cfg_type_rpz = {
@@ -1270,6 +1275,40 @@
 };
 
 
+/*
+ * rate-limit
+ */
+static cfg_clausedef_t rrl_clauses[] = {
+	{ "responses-per-second", &cfg_type_uint32, 0 },
+	{ "referrals-per-second", &cfg_type_uint32, 0 },
+	{ "nodata-per-second", &cfg_type_uint32, 0 },
+	{ "nxdomains-per-second", &cfg_type_uint32, 0 },
+	{ "errors-per-second", &cfg_type_uint32, 0 },
+	{ "all-per-second", &cfg_type_uint32, 0 },
+	{ "slip", &cfg_type_uint32, 0 },
+	{ "window", &cfg_type_uint32, 0 },
+	{ "log-only", &cfg_type_boolean, 0 },
+	{ "qps-scale", &cfg_type_uint32, 0 },
+	{ "ipv4-prefix-length", &cfg_type_uint32, 0 },
+	{ "ipv6-prefix-length", &cfg_type_uint32, 0 },
+	{ "exempt-clients", &cfg_type_bracketed_aml, 0 },
+	{ "max-table-size", &cfg_type_uint32, 0 },
+	{ "min-table-size", &cfg_type_uint32, 0 },
+	{ NULL, NULL, 0 }
+};
+
+static cfg_clausedef_t *rrl_clausesets[] = {
+	rrl_clauses,
+	NULL
+};
+
+static cfg_type_t cfg_type_rrl = {
+	"rate-limit", cfg_parse_map, cfg_print_map, cfg_doc_map,
+	&cfg_rep_map, rrl_clausesets
+};
+
+
+
 /*%
  * dnssec-lookaside
  */
@@ -1423,6 +1462,7 @@
 	   CFG_CLAUSEFLAG_NOTCONFIGURED },
 #endif
 	{ "response-policy", &cfg_type_rpz, 0 },
+	{ "rate-limit", &cfg_type_rrl, 0 },
 	{ NULL, NULL, 0 }
 };
 
diff -r -u named.conf-orig named.conf
--- named.conf-orig	2004-01-01 00:00:00.000000000 +0000
+++ named.conf	2004-01-01 00:00:00.000000000 +0000
@@ -0,0 +1,153 @@
+/*
+ * Copyright (C) 2012, 2013  Internet Systems Consortium, Inc. ("ISC")
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+ * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+
+controls { /* empty */ };
+
+options {
+	query-source address 10.53.0.3;
+	notify-source 10.53.0.3;
+	transfer-source 10.53.0.3;
+	port 5300;
+	session-keyfile "session.key";
+	pid-file "named.pid";
+	listen-on { 10.53.0.3; };
+	listen-on-v6 { none; };
+	notify no;
+
+	// check that all of the options are parsed without limiting anything
+	rate-limit {
+	    responses-per-second 200;
+	    referrals-per-second 220;
+	    nodata-per-second 230;
+	    nxdomains-per-second 240;
+	    errors-per-second 250;
+	    all-per-second 700;
+	    ipv4-prefix-length 24;
+	    ipv6-prefix-length 64;
+	    qps-scale 10;
+	    window 1;
+	    max-table-size 1000;
+	};
+
+};
+
+zone "." { type hint; file "hints"; };
+
+zone "tld3."{ type master; file "tld3.db"; };
+/*
+ * Copyright (C) 2012, 2013  Internet Systems Consortium, Inc. ("ISC")
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+ * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+
+controls { /* empty */ };
+
+options {
+	query-source address 10.53.0.2;
+	notify-source 10.53.0.2;
+	transfer-source 10.53.0.2;
+	port 5300;
+	session-keyfile "session.key";
+	pid-file "named.pid";
+	statistics-file	"named.stats";
+	listen-on { 10.53.0.2; };
+	listen-on-v6 { none; };
+	notify no;
+
+	rate-limit {
+	    responses-per-second 2;
+	    all-per-second 50;
+	    slip 3;
+	    exempt-clients { 10.53.0.7; };
+
+	    // small enough to force a table expansion
+	    min-table-size 75;
+	};
+
+	additional-from-cache no;
+};
+
+key rndc_key {
+	secret "1234abcd8765";
+	algorithm hmac-md5;
+};
+controls {
+	inet 10.53.0.2 port 9953 allow { any; } keys { rndc_key; };
+};
+
+/*
+ * These log settings have no effect unless "-g" is removed from ../../start.pl
+ */
+logging {
+	channel debug {
+	    file "log-debug";
+	    print-category yes; print-severity yes; severity debug 10;
+	};
+	channel queries {
+	    file "log-queries";
+	    print-category yes; print-severity yes; severity info;
+	};
+	category rate-limit { debug; queries; };
+	category queries { debug; queries; };
+};
+
+zone "." { type hint; file "hints"; };
+
+zone "tld2."{ type master; file "tld2.db"; };
+/*
+ * Copyright (C) 2012, 2013  Internet Systems Consortium, Inc. ("ISC")
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+ * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+
+controls { /* empty */ };
+
+options {
+	query-source address 10.53.0.1;
+	notify-source 10.53.0.1;
+	transfer-source 10.53.0.1;
+	port 5300;
+	session-keyfile "session.key";
+	pid-file "named.pid";
+	listen-on { 10.53.0.1; };
+	listen-on-v6 { none; };
+	notify no;
+};
+
+zone "." {type master; file "root.db";};
diff -r -u root.db-orig root.db
--- root.db-orig	2004-01-01 00:00:00.000000000 +0000
+++ root.db	2004-01-01 00:00:00.000000000 +0000
@@ -0,0 +1,31 @@
+; Copyright (C) 2012, 2013  Internet Systems Consortium, Inc. ("ISC")
+;
+; Permission to use, copy, modify, and/or distribute this software for any
+; purpose with or without fee is hereby granted, provided that the above
+; copyright notice and this permission notice appear in all copies.
+;
+; THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+; REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+; AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+; INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+; LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+; OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+; PERFORMANCE OF THIS SOFTWARE.
+
+
+$TTL	120
+@		SOA	ns. hostmaster.ns. ( 1 3600 1200 604800 60 )
+@		NS	ns.
+ns.		A	10.53.0.1
+.		A	10.53.0.1
+
+; limit responses from here
+tld2.		NS	ns.tld2.
+ns.tld2.	A	10.53.0.2
+
+; limit recursion to here
+tld3.		NS	ns.tld3.
+ns.tld3.	A	10.53.0.3
+
+; generate SERVFAIL
+tld4.		NS	ns.tld3.
diff -r -u setup.sh-orig setup.sh
--- setup.sh-orig	2004-01-01 00:00:00.000000000 +0000
+++ setup.sh	2004-01-01 00:00:00.000000000 +0000
@@ -0,0 +1,21 @@
+#!/bin/sh
+#
+# Copyright (C) 2012, 2013  Internet Systems Consortium, Inc. ("ISC")
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+# REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+# AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+# INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+# LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+# OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+# PERFORMANCE OF THIS SOFTWARE.
+
+
+SYSTEMTESTTOP=..
+. $SYSTEMTESTTOP/conf.sh
+. ./clean.sh
+
diff -r -u tests.sh-orig tests.sh
--- tests.sh-orig	2004-01-01 00:00:00.000000000 +0000
+++ tests.sh	2004-01-01 00:00:00.000000000 +0000
@@ -0,0 +1,258 @@
+# Copyright (C) 2012, 2013  Internet Systems Consortium, Inc. ("ISC")
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+# REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+# AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+# INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+# LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+# OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+# PERFORMANCE OF THIS SOFTWARE.
+
+
+# test response rate limiting
+
+SYSTEMTESTTOP=..
+. $SYSTEMTESTTOP/conf.sh
+
+#set -x
+
+ns1=10.53.0.1			    # root, defining the others
+ns2=10.53.0.2			    # test server
+ns3=10.53.0.3			    # secondary test server
+ns7=10.53.0.7			    # whitelisted client
+
+USAGE="$0: [-x]"
+while getopts "x" c; do
+    case $c in
+	x) set -x;;
+	*) echo "$USAGE" 1>&2; exit 1;;
+    esac
+done
+shift `expr $OPTIND - 1 || true`
+if test "$#" -ne 0; then
+    echo "$USAGE" 1>&2
+    exit 1
+fi
+# really quit on control-C
+trap 'exit 1' 1 2 15
+
+
+ret=0
+setret () {
+    ret=1
+    echo "$*"
+}
+
+
+# Wait until soon after the start of a second to make results consistent.
+#   The start of a second credits a rate limit.
+#   This would be far easier in C or by assuming a modern version of perl.
+sec_start () {
+    START=`date`
+    while true; do
+	NOW=`date`
+	if test "$START" != "$NOW"; then
+	    return
+	fi
+	$PERL -e 'select(undef, undef, undef, 0.05)' || true
+    done
+}
+
+
+# turn off ${HOME}/.digrc
+HOME=/dev/null; export HOME
+
+#   $1=result name  $2=domain name  $3=dig options
+digcmd () {
+    OFILE=$1; shift
+    DIG_DOM=$1; shift
+    ARGS="+nosearch +time=1 +tries=1 +ignore -p 5300 $* $DIG_DOM @$ns2"
+    #echo I:dig $ARGS 1>&2
+    START=`date +%y%m%d%H%M.%S`
+    RESULT=`$DIG $ARGS 2>&1 | tee $OFILE=TEMP				\
+	    | sed -n -e '/^;; AUTHORITY/,/^$/d'				\
+		-e '/^;; ADDITIONAL/,/^$/d'				\
+		-e  's/^[^;].*	\([^	 ]\{1,\}\)$/\1/p'		\
+		-e 's/;; flags.* tc .*/TC/p'				\
+		-e 's/;; .* status: NXDOMAIN.*/NXDOMAIN/p'		\
+		-e 's/;; .* status: SERVFAIL.*/SERVFAIL/p'		\
+		-e 's/;; connection timed out.*/drop/p'			\
+		-e 's/;; communications error to.*/drop/p'		\
+	    | tr -d '\n'`
+    mv "$OFILE=TEMP" "$OFILE=$RESULT"
+    touch -t $START "$OFILE=$RESULT"
+}
+
+
+#   $1=number of tests  $2=target domain  $3=dig options
+QNUM=1
+burst () {
+    BURST_LIMIT=$1; shift
+    BURST_DOM_BASE="$1"; shift
+    while test "$BURST_LIMIT" -ge 1; do
+	CNT=`expr "00$QNUM" : '.*\(...\)'`
+	eval BURST_DOM="$BURST_DOM_BASE"
+	FILE="dig.out-$BURST_DOM-$CNT"
+	digcmd $FILE $BURST_DOM $* &
+	QNUM=`expr $QNUM + 1`
+	BURST_LIMIT=`expr "$BURST_LIMIT" - 1`
+    done
+}
+
+
+#   $1=domain  $2=IP address  $3=# of IP addresses  $4=TC  $5=drop
+#	$6=NXDOMAIN  $7=SERVFAIL or other errors
+ck_result() {
+    BAD=
+    wait
+    ADDRS=`ls dig.out-$1-*=$2				2>/dev/null | wc -l`
+    # count simple truncated and truncated NXDOMAIN as TC
+    TC=`ls dig.out-$1-*=TC dig.out-$1-*=NXDOMAINTC	2>/dev/null | wc -l`
+    DROP=`ls dig.out-$1-*=drop				2>/dev/null | wc -l`
+    # count NXDOMAIN and truncated NXDOMAIN as NXDOMAIN
+    NXDOMAIN=`ls dig.out-$1-*=NXDOMAIN  dig.out-$1-*=NXDOMAINTC	2>/dev/null \
+							| wc -l`
+    SERVFAIL=`ls dig.out-$1-*=SERVFAIL			2>/dev/null | wc -l`
+    if test $ADDRS -ne "$3"; then
+	setret "I:"$ADDRS" instead of $3 '$2' responses for $1"
+	BAD=yes
+    fi
+    if test $TC -ne "$4"; then
+	setret "I:"$TC" instead of $4 truncation responses for $1"
+	BAD=yes
+    fi
+    if test $DROP -ne "$5"; then
+	setret "I:"$DROP" instead of $5 dropped responses for $1"
+	BAD=yes
+    fi
+    if test $NXDOMAIN -ne "$6"; then
+	setret "I:"$NXDOMAIN" instead of $6 NXDOMAIN responses for $1"
+	BAD=yes
+    fi
+    if test $SERVFAIL -ne "$7"; then
+	setret "I:"$SERVFAIL" instead of $7 error responses for $1"
+	BAD=yes
+    fi
+    if test -z "$BAD"; then
+	rm -f dig.out-$1-*
+    fi
+}
+
+
+ckstats () {
+    LABEL="$1"; shift
+    TYPE="$1"; shift
+    EXPECTED="$1"; shift
+    C=`sed -n -e "s/[	 ]*\([0-9]*\).responses $TYPE for rate limits.*/\1/p"  \
+	    ns2/named.stats | tail -1`
+    C=`expr 0$C + 0`
+    if test "$C" -ne $EXPECTED; then
+	setret "I:wrong $LABEL $TYPE statistics of $C instead of $EXPECTED"
+    fi
+}
+
+
+#########
+sec_start
+
+# Tests of referrals to "." must be done before the hints are loaded
+#   or with "additional-from-cache no"
+burst 5 a1.tld3 +norec
+# basic rate limiting
+burst 3 a1.tld2
+# 1 second delay allows an additional response.
+sleep 1
+burst 10 a1.tld2
+# Request 30 different qnames to try a wildcard.
+burst 30 'x$CNT.a2.tld2'
+# These should be counted and limited but are not.  See RT33138.
+burst 10 'y.x$CNT.a2.tld2'
+
+#					IP      TC      drop  NXDOMAIN SERVFAIL
+# referrals to "."
+ck_result   a1.tld3	''		2	1	2	0	0
+# check 13 results including 1 second delay that allows an additional response
+ck_result   a1.tld2	192.0.2.1	3	4	6	0	0
+
+# Check the wild card answers.
+# The parent name of the 30 requests is counted.
+ck_result 'x*.a2.tld2'	192.0.2.2	2	10	18	0	0
+
+# These should be limited but are not.  See RT33138.
+ck_result 'y.x*.a2.tld2' 192.0.2.2	10	0	0	0	0
+
+#########
+sec_start
+
+burst 10 'x.a3.tld3'
+burst 10 'y$CNT.a3.tld3'
+burst 10 'z$CNT.a4.tld2'
+
+# 10 identical recursive responses are limited
+ck_result 'x.a3.tld3'	192.0.3.3	2	3	5	0	0
+
+# 10 different recursive responses are not limited
+ck_result 'y*.a3.tld3'	192.0.3.3	10	0	0	0	0
+
+# 10 different NXDOMAIN responses are limited based on the parent name.
+#   We count 13 responses because we count truncated NXDOMAIN responses
+#   as both truncated and NXDOMAIN.
+ck_result 'z*.a4.tld2'	x		0	3	5	5	0
+
+$RNDC -c $SYSTEMTESTTOP/common/rndc.conf -p 9953 -s $ns2 stats
+ckstats first dropped 36
+ckstats first truncated 21
+
+
+#########
+sec_start
+
+burst 10 a5.tld2 +tcp
+burst 10 a6.tld2 -b $ns7
+burst 10 a7.tld4
+burst 2 a8.tld2 AAAA
+burst 2 a8.tld2 TXT
+burst 2 a8.tld2 SPF
+
+#					IP      TC      drop  NXDOMAIN SERVFAIL
+# TCP responses are not rate limited
+ck_result a5.tld2	192.0.2.5	10	0	0	0	0
+
+# whitelisted client is not rate limited
+ck_result a6.tld2	192.0.2.6	10	0	0	0	0
+
+# Errors such as SERVFAIL are rate limited.
+ck_result a7.tld4	x		0	0	8	0	2
+
+# NODATA responses are counted as the same regardless of qtype.
+ck_result a8.tld2	''		2	2	2	0	0
+
+$RNDC -c $SYSTEMTESTTOP/common/rndc.conf -p 9953 -s $ns2 stats
+ckstats second dropped 46
+ckstats second truncated 23
+
+
+#########
+sec_start
+
+#					IP      TC      drop  NXDOMAIN SERVFAIL
+# all-per-second
+#   The qnames are all unique but the client IP address is constant.
+QNUM=101
+burst 60 'all$CNT.a9.tld2'
+
+ck_result 'a*.a9.tld2'	192.0.2.8	50	0	10	0	0
+
+$RNDC -c $SYSTEMTESTTOP/common/rndc.conf -p 9953 -s $ns2 stats
+ckstats final dropped 56
+ckstats final truncated 23
+
+
+echo "I:exit status: $ret"
+# exit $ret
+[ $ret -ne 0 ] && echo "I:test failure overridden"
+exit 0
diff -r -u tld2.db-orig tld2.db
--- tld2.db-orig	2004-01-01 00:00:00.000000000 +0000
+++ tld2.db	2004-01-01 00:00:00.000000000 +0000
@@ -0,0 +1,47 @@
+; Copyright (C) 2012, 2013  Internet Systems Consortium, Inc. ("ISC")
+;
+; Permission to use, copy, modify, and/or distribute this software for any
+; purpose with or without fee is hereby granted, provided that the above
+; copyright notice and this permission notice appear in all copies.
+;
+; THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+; REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+; AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+; INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+; LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+; OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+; PERFORMANCE OF THIS SOFTWARE.
+
+
+
+; rate limit response from this zone
+
+$TTL	120
+@		SOA	tld2.  hostmaster.ns.tld2. ( 1 3600 1200 604800 60 )
+		NS	ns
+		NS	.
+ns		A	10.53.0.2
+
+; basic rate limiting
+a1		A	192.0.2.1
+
+; wildcards
+*.a2		A	192.0.2.2
+
+; a3 is in tld3
+
+; a4 does not exist to give NXDOMAIN
+
+; a5 for TCP requests
+a5		A	192.0.2.5
+
+; a6 for whitelisted clients
+a6		A	192.0.2.6
+
+; a7 for SERVFAIL
+
+; a8 for NODATA
+a8		A	192.0.2.8
+
+; a9 for all-per-second limit
+$GENERATE 101-180 all$.a9 A 192.0.2.8
diff -r -u tld3.db-orig tld3.db
--- tld3.db-orig	2004-01-01 00:00:00.000000000 +0000
+++ tld3.db	2004-01-01 00:00:00.000000000 +0000
@@ -0,0 +1,25 @@
+; Copyright (C) 2012, 2013  Internet Systems Consortium, Inc. ("ISC")
+;
+; Permission to use, copy, modify, and/or distribute this software for any
+; purpose with or without fee is hereby granted, provided that the above
+; copyright notice and this permission notice appear in all copies.
+;
+; THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+; REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+; AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+; INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+; LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+; OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+; PERFORMANCE OF THIS SOFTWARE.
+
+
+
+; rate limit response from this zone
+
+$TTL	120
+@		SOA	tld3.  hostmaster.ns.tld3. ( 1 3600 1200 604800 60 )
+		NS	ns
+		NS	.
+ns		A	10.53.0.3
+
+*.a3		A	192.0.3.3
diff -r -u version-orig version
--- version-orig	2004-01-01 00:00:00.000000000 +0000
+++ version	2004-01-01 00:00:00.000000000 +0000
@@ -7,6 +7,6 @@
 DESCRIPTION="(Extended Support Version)"
 MAJORVER=9
 MINORVER=9
-PATCHVER=3
+PATCHVER=3-rpz2+rl.156.01
 RELEASETYPE=-P
 RELEASEVER=1