I want to bridge a large number of VLANs between two sites as a single L2TPv3 bridge instead of individual bridges for each VLAN/VIF. Is this supported? Ie. if I bridge a trunk interface (not VIFs) that is carrying all the VLANs I need to transport to another site, will the bridge strip the VLAN tags, or pass them through unchanged, or just block the tagged frames entirely?