diff -Nru isc-dhcp-4.3.5/debian/changelog isc-dhcp-4.3.5/debian/changelog
--- isc-dhcp-4.3.5/debian/changelog	2018-08-01 13:05:46.000000000 +0000
+++ isc-dhcp-4.3.5/debian/changelog	2018-12-11 18:39:25.000000000 +0000
@@ -1,3 +1,10 @@
+isc-dhcp (4.3.5-3ubuntu10) disco; urgency=medium
+
+  * d/p/bind-includes.patch: updated to build with bind 9.11.5. Taken from
+    Debian bug #911975, thanks to Thorsten Alteholz <debian@alteholz.de>
+
+ -- Andreas Hasenack <andreas@canonical.com>  Tue, 11 Dec 2018 16:39:25 -0200
+
 isc-dhcp (4.3.5-3ubuntu9) cosmic; urgency=medium
 
   * No change rebuild against new bind9 libs.
diff -Nru isc-dhcp-4.3.5/debian/patches/bind-includes.patch isc-dhcp-4.3.5/debian/patches/bind-includes.patch
--- isc-dhcp-4.3.5/debian/patches/bind-includes.patch	2018-04-16 10:39:22.000000000 +0000
+++ isc-dhcp-4.3.5/debian/patches/bind-includes.patch	2018-12-11 18:39:25.000000000 +0000
@@ -1,15 +1,31 @@
-description: explicitly include bind's isc/util.h header
+description: explicitly include bind headers that are required
+ Patch updated with changes from Thorsten Alteholz <debian@alteholz.de>
+ to fix building with Bind 9.11.5, see Debian bug #911975.
 author: Michael Gilbert <mgilbert@debian.org>
-bug-debian: http://bugs.debian.org/894093
+Bug-Debian: https://bugs.debian.org/894093
+Bug-Debian: https://bugs.debian.org/911975
+Last-Update: 2018-12-13
 
 --- a/includes/dhcpd.h
 +++ b/includes/dhcpd.h
-@@ -62,6 +62,8 @@
+@@ -62,6 +62,10 @@
  # include <net/if_dl.h>
  #endif
  
++#include <isc/int.h>
 +#include <isc/util.h>
++#include <isc/boolean.h>
 +
  #include <setjmp.h>
  
  #include "cdefs.h"
+--- a/includes/omapip/omapip.h
++++ b/includes/omapip/omapip.h
+@@ -32,6 +32,7 @@
+ #include <stdarg.h>
+ 
+ #include <dns/tsec.h>
++#include <isc/boolean.h>
+ 
+ typedef unsigned int omapi_handle_t;
+