VLAN tagging on LAN2 breaks connectivity to device on that port — GL-MT5000 (Brume 3)

[xize11]

I believe this is a driver issue as discussed here:

GL-MT5000 (Brume 3) upstream OpenWrt support

What I was trying to do is really very simple, basic VLAN trunk. Starting clean after a firmware config reset, I enabled LuCI and I created VLAN 10, assigning it as “tagged” egress in both LAN1 and LAN2 (while keeping the default VLAN 1 as untagged). This is the configuration I am using in my network, since each AP will assign VLAN 10 to the guest/IoT wifi SSIDs. As soon as I apply this config (see below), I immediately lose connection to the router. Maybe I am observing the bug reported here? …

I never got this type of setup working, if you scroll down some more under the linked post you can see a detailed post by @rthco.

My 2 cents wait for a newer firmware or a official response in the linked discussion if they fixed it the part with the glue'd wrappers.