I am also interested in this.
I have a CRS305-1G-4S+IN Switch that is running SwOS and it is connected to x2 of my CORE CCR2004-1G-12S+2XS Routers. QinQ frames (S-TAG & C-TAG) come into this Switch and need to be able to be passed onto the Routers (Active/Passive). QinQ is new to me so I figured I would just be able to configure all of the ports to trunk ports on the Switch and that would mean it will pass these QinQ frames to the Routers, but that must not be the case?
I am the same as Justin, I just want to know if it will pass the QinQ VLAN through and then pass them through to my Routers.