Multicast over a wireguard link?

[Jason A. Donenfeld]

Hi Toke,

Right now, no, there's no multicast. But it wouldn't be that hard to
add the ability to add the same allowed-ips entry to multiple peers,
and have WireGuard duplicate the message to all of them.

It's not complicated in theory, but I wonder if this would be
genuinely useful, and whether or not it'd open up a wormhole of
potential issues.

Thoughts?

Jason