diff --git a/network/vif-route-qubes b/network/vif-route-qubes
index 6809028..68fbf38 100755
--- a/network/vif-route-qubes
+++ b/network/vif-route-qubes
@@ -54,7 +54,7 @@ if [ "${ip}" ] ; then
 		${cmdprefix} ip route ${ipcmd} ${addr} dev ${vif} metric $metric
 	done
 	${cmdprefix} iptables -t raw $iptables_cmd -i ${vif} \! -s ${ip} -j DROP
-	back_ip=${ip%.*}.1
+	back_ip=`xenstore-read qubes-netvm-gateway`
 	${cmdprefix} ip addr ${ipcmd} ${back_ip}/32 dev ${vif}
 fi