On: Innernet: A private network system that uses WireGuard under the hood

[McNutty]

IIRC, what you suggested is exactly how zerotier implements it

[generalizations → McNutty]

Huh. I think you're right. Though, zerotier uses central servers, has a significant performance hit compared to a wireguard solution, and is an L2 rather than L3 solution (the last isn't really a downside though).