diff -u isc-dhcp-4.1.1-P1/debian/changelog isc-dhcp-4.1.1-P1/debian/changelog
--- isc-dhcp-4.1.1-P1/debian/changelog
+++ isc-dhcp-4.1.1-P1/debian/changelog
@@ -1,4 +1,4 @@
-isc-dhcp (4.1.1-P1-11ubuntu1~ppa2) natty; urgency=low
+isc-dhcp (4.1.1-P1-11ubuntu1~ppa3) natty; urgency=low
 
   * Resynchronise with Debian.  Remaining changes:
     - Deroot server (Debian #308832).
@@ -40,6 +40,9 @@
   * Make isc-dhcp-server depend on adduser for its postinst.
   * Fix configure test for ber_init to work correctly with 'ld
     --no-add-needed'.
+  * isc-dhcp-client Breaks: network-manager (<< 0.8.2~rc1), since earlier
+    versions were patched in Ubuntu to hardcode assumptions for
+    dhcp3-client.
 
  -- Colin Watson <cjwatson@ubuntu.com>  Wed, 03 Nov 2010 16:19:15 +0000
 
diff -u isc-dhcp-4.1.1-P1/debian/control isc-dhcp-4.1.1-P1/debian/control
--- isc-dhcp-4.1.1-P1/debian/control
+++ isc-dhcp-4.1.1-P1/debian/control
@@ -95,6 +95,7 @@
 Provides: dhcp3-client
 Conflicts: dhcp-client (<< 3.0), samba-common (<< 3.0.0beta1-2), resolvconf (<= 1.45), ifupdown (<< 0.6.8+nmu3)
 Replaces: dhcp3-client
+Breaks: network-manager (<< 0.8.2~rc1)
 Description: ISC DHCP client
  This is the client from the Internet Software Consortium's implementation of
  DHCP. For more information visit http://www.isc.org.