Fair comment; and you're correct that (to the best of my knowledge) we don't specifically test VLANs on the pi platform at the moment (the majority of the autom

Fair comment; and you're correct that (to the best of my knowledge) we don't specifically test VLANs on the pi platform at the moment (the majority of the automated testing performed directly on pis is pi-specific hardware compatibility: boot, wifi, bluetooth, etc. etc.) Something vaguely similar came up back in hirsute with the veth module (preventing containers from configuring ethernet): another thing that wasn't pi specific. That got resolved by moving veth back (which will almost certainly be the resolution in this case). I've found what I suspect is the ticket you mentioned (LP: #1973485) and though it looks like the kernel team have picked it up, it's not resolved yet. I'll see what I can do to get it some more priority (at the very least it should be dealt with prior to the point release). I've added VLANs to the release notes in the meantime, however, I can't add the full list of functionality because the list is frankly enormous (well over 1000 modules).