I think this is pretty much what I am looking for. I dont see a big need to have the host access the local network as everything I am using is in docker containers. I tried getting wireguard running on the host and a container and kept getting errors like the one below when trying to start wireguard

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RTNETLINK answers: Operation not supported

Unable to access interface: Protocol not supported

AI also ran sudo modprobe wireguard which gave this modprobe: FATAL: Module wireguard not found in directory /lib/modules/4.15.0-20-generic

Any details on how you got yours going?

Can someone provide some use cases for this? Curious how I can extend my homelab via this.