$NetBSD: patch-aj,v 1.1.1.1 2011/04/06 09:10:27 cegger Exp $

--- hotplug/NetBSD/vif-bridge.orig	2011-03-25 11:42:50.000000000 +0100
+++ hotplug/NetBSD/vif-bridge	2011-04-01 14:55:58.000000000 +0200
@@ -23,7 +23,10 @@
 	xbridge=$(xenstore-read "$xpath/bridge")
 	xfid=$(xenstore-read "$xpath/frontend-id")
 	xhandle=$(xenstore-read "$xpath/handle")
-	iface=$(xenstore-read "$xpath/vifname")
+ 	iface=$(xenstore-read "$xpath/vifname") || true
+	if [ x${iface} = "x" ] ; then
+		iface=xvif$xfid.$xhandle
+	fi
 	echo ifconfig $iface up
 	ifconfig $iface up
 	brconfig $xbridge add $iface