Symptom
Layer-2 frames that egress from trunk ports are always tagged, even with native vlan of the port.
Conditions
Observed on HW: N9K-C93180YC-FX, SW: 7.0(3)I7(3).
"system dot1q-tunnel transit" command is present.
interface Ethernet1/38
switchport
switchport mode trunk
switchport trunk native vlan 1034
In this case, L2 frames that egress from E1/38 will be tagged even for vlan 1034.
Further Problem Description
The Q in Q VLAN tunnel configuration guides currently document the following:
"The following caveats apply to using system dot1q-tunnel transit command:
L2 frames that egress trunk ports are always tagged, even with the native VLAN of the port."
With the fix of this bug, the above limitation is no longer the case starting from NX-OS releases 9.2(3) + and 9.3(3)+.
