I'm trying to bridge a QinQ vlan to another VLAN on a different port. It looks to work and the likes of dhcp traffic passes.

However, that is all that seems to make it across. It feels like a MTU issue bit if I give the QinQ VLAN and IP locally it can take a ping of size=1500 and do-not-fragment set.

I've upgraded rOS and Firmware to no avail. I have it working on a separate RB1100AUx2 (QinQ to a VLAN on a separate interface).

Any thoughts or suggestions?