fff-vxlan-node: fix cleanup

Without "uci commit" peers do not appear in /etc/config network. Use uci show instead.

Signed-off-by: Robert Langhammer <rlanghammer@web.de>

src/packages/fff/fff-vxlan-node-vpn/files/usr/lib/vpn-select.d/vxlan

@@ -21,6 +21,6 @@ vxlan_start_stop() {
 	# this workaround is cleaning up old fdb entries
 	# and can be removed if someday netifd will do that
 	bridge fdb show dev vxlan0 state permanent | while read mac dst ip rest ; do
-		grep -q "$ip" /etc/config/network || bridge fdb del $mac dev vxlan0 dst $ip
+		uci show network | grep -q "$ip" || bridge fdb del $mac dev vxlan0 dst $ip
 	done
 }