A little thought experiment which I haven't tried yet.
Using anycast, a single IP address can be routed to multiple machines in a data center or around the world.
Is it at all possible that anycast and Wireguard would play together nicely? In particular, is it plausible that you could give a client an anycast address of a server to use as its endpoint, and that when it picked the correct / closest one that it would do the right thing?
The naive approach would be to have all of the anycast devices share the same private/public key pair, but that has a bad smell. And I don't know what would happen if your routing changed in mid-connection.
(anycast is the technology used to give name servers a single global address, like Google's 8.8.8.8 DNS)
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Edward Vielmetti +1 734 330 2465