Shoutout to mosh!pic.twitter.com/tXq33brKBV
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"You can't scan for [Wireguard] on the internet."

This is totally acceptable and secure. 

pic.twitter.com/LQRBIVPd4p
> hybrid pq handshake through the tunnel
_Through_ ?
@zx2c4
Yes, through, so that the PQ handshake is bound to the authenticated channel established prior with normal ECC. That's why this is considered "hybrid" -- you rely on the ECC keys for authentication, but add an ephemeral PQ key exchange for PQ forward secrecy.
What about maintaining the ECC keys for auth, but merging classical and pq ephemeral kex, similar to how hybrid kex is done with TLS?
This is what's accomplished by doing the PQ key exchange _through_ the tunnel. But, meanwhile, the Noise project is working on specifying hybrid PQ exchanges as part of the actual Noise handshake, which I think is more similar to what you have in mind.
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