diff --git a/ifupdown2/debian/python-ifupdown2.postinst b/ifupdown2/debian/python-ifupdown2.postinst
index 10ca49a..ce26e54 100644
--- a/ifupdown2/debian/python-ifupdown2.postinst
+++ b/ifupdown2/debian/python-ifupdown2.postinst
@@ -89,3 +89,5 @@ if [ -x "/etc/init.d/networking" ]; then
 fi
 
 #DEBHELPER#
+
+exit 0
diff --git a/ifupdown2/debian/python-ifupdown2.postrm b/ifupdown2/debian/python-ifupdown2.postrm
index e0f07d4..bbd00a8 100644
--- a/ifupdown2/debian/python-ifupdown2.postrm
+++ b/ifupdown2/debian/python-ifupdown2.postrm
@@ -17,9 +17,9 @@ case "$1" in
     ;;
 esac
 
-udevlink=$(readlink /etc/udev/rules.d/80-networking.rules 2>/dev/null)
+udevlink=$(readlink /etc/udev/rules.d/80-networking.rules 2>/dev/null || true)
 [ -n "$udevlink" -a "$udevlink" == "/dev/null" ] && rm -f /etc/udev/rules.d/80-networking.rules
-udevlink=$(readlink /etc/udev/rules.d/60-bridge-network-interface.rules 2>/dev/null)
+udevlink=$(readlink /etc/udev/rules.d/60-bridge-network-interface.rules 2>/dev/null || true)
 [ -n "$udevlink" -a "$udevlink" == "/dev/null" ] && rm -f /etc/udev/rules.d/60-bridge-network-interface.rules
 
 if [ "$1" = "purge" ] ; then
diff --git a/packages/ifupdown2/debian/python-ifupdown2.preinst b/packages/ifupdown2/debian/python-ifupdown2.preinst
new file mode 100755
index 0000000..3fcaed1
--- /dev/null
+++ b/packages/ifupdown2/debian/python-ifupdown2.preinst
@@ -0,0 +1,56 @@
+#!/bin/sh
+# preinst script for newpkg
+#
+# see: dh_installdeb(1)
+
+set -e
+
+# summary of how this script can be called:
+#        * <new-preinst> `install'
+#        * <new-preinst> `install' <old-version>
+#        * <new-preinst> `upgrade' <old-version>
+#        * <old-preinst> `abort-upgrade' <new-version>
+# for details, see http://www.debian.org/doc/debian-policy/ or
+# the debian-policy package
+
+preinst_upgrade()
+{
+	local oldver="$1"
+	local udev_user_rulesdir="/etc/udev/rules.d"
+
+	# we have to fixup the filesystem here as previous packages of
+	# ifupdown2 introduced a bug in the postrm script that require
+	# these files to exist, otherwise the postrm script will always
+	# fail.
+	local badver="0.1-cl2.5+2"
+	if dpkg --compare-versions "${oldver}" "lt" "${badver}"; then
+		local files="${udev_user_rulesdir}/80-networking.rules
+			${udev_user_rulesdir}/60-bridge-network-interface.rules"
+		for f in ${files}; do
+			echo "touching udev rule: ${f}"
+			test ! -e "${f}" && ln -s /dev/null "${f}" || \
+				/bin/echo -e "\tudev rule exists leaving"
+		done
+	fi
+}
+
+case "$1" in
+	install|upgrade)
+		preinst_upgrade "$2"
+	;;
+
+	abort-upgrade)
+	;;
+
+	*)
+		echo "preinst called with unknown argument \`$1'" >&2
+		exit 1
+	;;
+esac
+
+# dh_installdeb will replace this with shell code automatically
+# generated by other debhelper scripts.
+
+#DEBHELPER#
+
+exit 0