diff --git a/dhcp-4.1.1-P1.tar.bz2 b/dhcp-4.1.1-P1.tar.bz2
new file mode 100644
index 0000000..ee5ee99
--- /dev/null
+++ b/dhcp-4.1.1-P1.tar.bz2
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6041d1658d814bee5a863964c748dc2f79dd2c618ce9db716b2846177861282a
+size 877572
diff --git a/dhcp-4.1.1.tar.bz2 b/dhcp-4.1.1.tar.bz2
deleted file mode 100644
index bccf9df..0000000
--- a/dhcp-4.1.1.tar.bz2
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:56937cd8e59da6ea0560e82d6b3dd637a96cc3052e0f8e163727c46a22fb87c4
-size 875897
diff --git a/dhcp.changes b/dhcp.changes
index abd6e10..cb9437d 100644
--- a/dhcp.changes
+++ b/dhcp.changes
@@ -1,3 +1,20 @@
+-------------------------------------------------------------------
+Mon Jun 14 12:11:57 UTC 2010 - mt@suse.de
+
+- Updated to ISC DHCP 4.1.1-P1 patch release, which contains
+  a pair of bug fixes including one for a security related bug
+  (bnc#612546, CVE-2010-2156):
+  * A bug was fixed that could cause the DHCPv6 server to
+    advertise/assign a previously allocated (active) lease to a
+    client that has changed subnets, despite being on different
+    shared networks. Dynamic prefixes specifically allocated in
+    shared networks also now are not offered if the client has
+    moved. [ISC-Bugs #21152]
+  * Accept a client id of length 0 while hashing. Previously the
+    server would exit if it attempted to hash a zero length client
+    id, providing attackers with a simple denial of service attack.
+    [ISC-Bugs #21253]
+
 -------------------------------------------------------------------
 Tue May 18 08:46:37 UTC 2010 - mt@suse.de
 
diff --git a/dhcp.spec b/dhcp.spec
index 8181147..1ad552f 100644
--- a/dhcp.spec
+++ b/dhcp.spec
@@ -1,5 +1,5 @@
 #
-# spec file for package dhcp (Version 4.1.1)
+# spec file for package dhcp (Version 4.1.1.P1)
 #
 # Copyright (c) 2010 SUSE LINUX Products GmbH, Nuernberg, Germany.
 #
@@ -17,7 +17,7 @@
 
 # norootforbuild
 
-%define isc_version   4.1.1
+%define isc_version   4.1.1-P1
 %define susefw2dir    %{_sysconfdir}/sysconfig/SuSEfirewall2.d/services
 %define omc_prefix    /usr/share/omc
 %define omc_svcdir    %{omc_prefix}/svcinfo.d
@@ -32,8 +32,8 @@ BuildRequires:  dos2unix
 License:        BSD3c(or similar)
 Group:          Productivity/Networking/Boot/Servers
 AutoReqProv:    on
-Version:        4.1.1
-Release:        2
+Version:        4.1.1.P1
+Release:        0
 Summary:        Common Files Used by ISC DHCP Software
 Url:            http://www.isc.org/software/dhcp
 Source0:        dhcp-%{isc_version}.tar.bz2