[RFC] Replace WireGuard AllowedIPs with IP route attribute

[Daniel Gröber]

Hi Bernd,

On Sat, Aug 19, 2023 at 07:50:38PM +0200, Bernd Naumann wrote:
> Chances are high I do miss something, but I've just set AllowedIPs to
> 0.0.0.0/0 and ::/0 and just used the routing protocol of my choice and
> filters to select which routes got exported and imported... :shrug:

Right, let me expand a bit. You are absolutely right, right now if you want
to use wg with dynamic routing daemons you essentially have to have one wg
tunnel per remote node with AllowedIPs=::/0 and that works just fine at
small scales.

The idea here is that we would like to go back to having just one tunnel
for all nodes involved in this particular network instead, due to general
operations scalability, mine is a mesh network so the number of tunnels
gets rather large quickly :)

Lots of tunnels suck for various reasons, monitoring if they're all up and
configured properly is one example but my understanding from previous
discussions is the performance is probably not ideal either.

--Daniel