diff -Nru livecd-rootfs-2.420+ppa50/debian/changelog livecd-rootfs-2.420+ppa51/debian/changelog
--- livecd-rootfs-2.420+ppa50/debian/changelog	2016-11-03 11:39:45.000000000 +0000
+++ livecd-rootfs-2.420+ppa51/debian/changelog	2016-12-07 13:49:04.000000000 +0000
@@ -1,3 +1,11 @@
+livecd-rootfs (2.420+ppa51) xenial; urgency=medium
+
+  * live-build/ubuntu-core/hooks/80-remove-blacklist-watchdog-file.chroot
+    remove blacklist-watchdog.conf during build so systems can load their
+    watchdog modules for systemd usage (LP: 1647992)
+
+ -- Oliver Grawert <ogra@ubuntu.com>  Wed, 07 Dec 2016 14:47:43 +0100
+
 livecd-rootfs (2.420+ppa50) xenial; urgency=medium
 
   * live-build/ubuntu-core/hooks/18-set-os-release.chroot:
diff -Nru livecd-rootfs-2.420+ppa50/live-build/ubuntu-core/hooks/80-remove-blacklist-watchdog-file.chroot livecd-rootfs-2.420+ppa51/live-build/ubuntu-core/hooks/80-remove-blacklist-watchdog-file.chroot
--- livecd-rootfs-2.420+ppa50/live-build/ubuntu-core/hooks/80-remove-blacklist-watchdog-file.chroot	1970-01-01 00:00:00.000000000 +0000
+++ livecd-rootfs-2.420+ppa51/live-build/ubuntu-core/hooks/80-remove-blacklist-watchdog-file.chroot	2016-12-07 13:47:33.000000000 +0000
@@ -0,0 +1,7 @@
+#! /bin/sh -ex
+
+# we want the watchdog modules to load for now so that
+# a systemd watchdog setup can use the modules
+# (LP: #1647992)
+
+rm -f /etc/modprobe.d/blacklist-watchdog.conf