Index: bind-9.16.23/contrib/dlz/drivers/dlz_ldap_driver.c
===================================================================
--- bind-9.16.23.orig/contrib/dlz/drivers/dlz_ldap_driver.c
+++ bind-9.16.23/contrib/dlz/drivers/dlz_ldap_driver.c
@@ -978,11 +978,13 @@ dlz_ldap_create(const char *dlzname, uns
 		if (result != ISC_R_SUCCESS) {
 			return (result);
 		}
+		/* FALLTHROUGH */
 	case 11:
 		result = dlz_ldap_checkURL(argv[10], 3, "all nodes");
 		if (result != ISC_R_SUCCESS) {
 			return (result);
 		}
+		/* FALLTHROUGH */
 	case 10:
 		if (strlen(argv[9]) > 0) {
 			result = dlz_ldap_checkURL(argv[9], 3, "authority");
@@ -990,6 +992,7 @@ dlz_ldap_create(const char *dlzname, uns
 				return (result);
 			}
 		}
+		/* FALLTHROUGH */
 	case 9:
 		result = dlz_ldap_checkURL(argv[8], 3, "lookup");
 		if (result != ISC_R_SUCCESS) {