Index: /luci/trunk/modules/admin-full/luasrc/model/cbi/admin_network/vlan.lua
===================================================================
--- /luci/trunk/modules/admin-full/luasrc/model/cbi/admin_network/vlan.lua	(revision 7295)
+++ /luci/trunk/modules/admin-full/luasrc/model/cbi/admin_network/vlan.lua	(revision 7330)
@@ -173,4 +173,5 @@
 				end)
 
+			m.uci:set("network", sid, "device", switch_name)
 			m.uci:set("network", sid, "vlan", max_nr + 1)