Hybrid literal interpretation
The Hybrid interface allows multiple VLAN frames to pass through, and the Tag of some VLAN frames can be stripped off in the outgoing interface direction.
The VLAN ID field determines whether to enter or leave the interface, similar to the access and quasi-exit mechanism. All VLAN messages with tag (even if the host message is typed with the default vlan) must first judge whether the VLAN message falls within the VLAN ID scope.