Removing a VLAN Tag
To remove a VLAN tag from all tagged frames entering or exiting
the interface, include the pop statement in the input VLAN
map or output VLAN map:
pop;
You can include this statement at the following hierarchy levels:
[edit interfaces interface-name unit logical-unit-number input-vlan-map][edit interfaces interface-name unit logical-unit-number output-vlan-map][edit logical-systems logical-system-name interfaces interface-name unit logical-unit-number input-vlan-map][edit logical-systems logical-system-name interfaces interface-name unit logical-unit-number output-vlan-map]