At this point lots of things don't work right otherwise, and assuming your users want to run wireguard over this link that takes them down to 1420, and if you'r

At this point lots of things don't work right otherwise, and assuming your users want to run wireguard over this link that takes them down to 1420, and if you're already at 1420 it takes them down to 1340... Anyway, you can probably use a lot less header overhead if you do it at a lower layer too.