Index: dhclient-script
===================================================================
--- dhclient-script
+++ dhclient-script
@@ -259,6 +259,14 @@
 	return 1
 }
 
+set_interface_mtu() {
+	if [ -n "$new_interface_mtu" ]; then
+		eval "$IFCONFIG $interface mtu $new_interface_mtu"
+
+		$LOGGER "New MTU ($interface): $new_interface_mtu"
+	fi
+}
+
 # Must be used on exit.   Invokes the local dhcp client exit hooks, if any.
 exit_with_hooks() {
 	exit_status=$1
@@ -337,6 +345,7 @@
 			delete_old_routes
 		fi
 	fi
+	set_interface_mtu
 	if [ "$reason" = BOUND ] || \
 	   [ "$reason" = REBOOT ] || \
 	   [ -z "$old_ip_address" ] || \