diff -u ifenslave-2.6-1.1.0/debian/pre-up ifenslave-2.6-1.1.0/debian/pre-up
--- ifenslave-2.6-1.1.0/debian/pre-up
+++ ifenslave-2.6-1.1.0/debian/pre-up
@@ -89,7 +89,10 @@
 	sysfs "$IF_BOND_XMIT_HASH_POLICY" xmit_hash_policy
 	sysfs "$IF_BOND_LACP_RATE" lacp_rate
 	sysfs_add "$IF_BOND_ARP_IP_TARGET" arp_ip_target
+}
 
+setup_slaves()
+{
 	# The first slave in bond-primary found in current slaves becomes the primary.
 	# If no slave in bond-primary is found, then primary does not change.
 	for slave in $IF_BOND_PRIMARY ; do
@@ -128,2 +131,3 @@
-enslave_slaves
 setup_master
+enslave_slaves
+setup_slaves
diff -u ifenslave-2.6-1.1.0/debian/ifenslave-2.6.preinst ifenslave-2.6-1.1.0/debian/ifenslave-2.6.preinst
--- ifenslave-2.6-1.1.0/debian/ifenslave-2.6.preinst
+++ ifenslave-2.6-1.1.0/debian/ifenslave-2.6.preinst
@@ -1,11 +1,25 @@
 #!/bin/sh -e
 
-if [ -f /etc/network/if-up.d/ifenslave -a ! -e /etc/network/if-pre-up.d/ifenslave ]; then
-	mv /etc/network/if-up.d/ifenslave /etc/network/if-pre-up.d/ifenslave
-fi
+prep_mv_conffile() {
+        local PKGNAME="$1"
+        local CONFFILE="$2"
 
-if [ -f /etc/network/if-down.d/ifenslave -a ! -e /etc/network/if-post-down.d/ifenslave ]; then
-	mv /etc/network/if-down.d/ifenslave /etc/network/if-post-down.d/ifenslave
-fi
+        [ -e "$CONFFILE" ] || return 0
+
+        local md5sum="$(md5sum $CONFFILE | sed -e 's/ .*//')"
+        local old_md5sum="$(dpkg-query -W -f='${Conffiles}' $PKGNAME | \
+                        sed -n -e "\' $CONFFILE ' { s/ obsolete$//; s/.* //; p }")"
+        if [ "$md5sum" = "$old_md5sum" ]; then
+                rm -f "$CONFFILE"
+        fi
+}
+
+case "$1" in
+install|upgrade)
+        if dpkg --compare-versions "$2" le "1.1.0-6"; then
+                prep_mv_conffile ifenslave "/etc/network/if-up.d/wireless-tools"
+                prep_mv_conffile ifenslave "/etc/network/if-down.d/wireless-tools"
+        fi
+esac
 
 #DEBHELPER#
diff -u ifenslave-2.6-1.1.0/debian/ifenslave-2.6.postinst ifenslave-2.6-1.1.0/debian/ifenslave-2.6.postinst
--- ifenslave-2.6-1.1.0/debian/ifenslave-2.6.postinst
+++ ifenslave-2.6-1.1.0/debian/ifenslave-2.6.postinst
@@ -5,2 +5,21 @@
 
+mv_conffile() {
+        local OLDCONFFILE="$1"
+        local NEWCONFFILE="$2"
+
+        [ -e "$OLDCONFFILE" ] || return 0
+
+        echo "Preserving user changes to $NEWCONFFILE ..."
+        mv -f "$NEWCONFFILE" "$NEWCONFFILE".dpkg-new
+        mv -f "$OLDCONFFILE" "$NEWCONFFILE"
+}
+
+case "$1" in
+configure)
+        if dpkg --compare-versions "$2" le "1.1.0-6"; then
+                mv_conffile "/etc/network/if-up.d/ifenslave" "/etc/network/if-pre-up.d/ifenslave"
+                mv_conffile "/etc/network/if-down.d/ifenslave" "/etc/network/if-post-down.d/ifenslave"
+        fi
+esac
+
 #DEBHELPER#
diff -u ifenslave-2.6-1.1.0/debian/changelog ifenslave-2.6-1.1.0/debian/changelog
--- ifenslave-2.6-1.1.0/debian/changelog
+++ ifenslave-2.6-1.1.0/debian/changelog
@@ -1,3 +1,10 @@
+ifenslave-2.6 (1.1.0-14ubuntu2.2) lucid-proposed; urgency=low
+
+  * Backport patches from 1.1.0.15 to fix dpkg trigger error and to
+    fix interface bonding (LP: #482419)
+
+ -- Bhavani Shankar <bhavi@ubuntu.com>  Wed, 14 Jul 2010 15:01:54 +0530
+
 ifenslave-2.6 (1.1.0-14ubuntu2.1) lucid-proposed; urgency=low
 
   * Adjust README.Debian to be consistent with the examples, not advising