Can untagged packets be forwarded in L2VPN

When the switch connects to L2VPN through a main interface, packets can be forwarded through this interface. If the switch connects to L2VPN through a sub-interface or VLANIF interface, packets can be forwarded only when they carry the correct VLAN ID. If packets are untagged or carry incorrect VLAN IDs, they are dropped at the AC-side interface.

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