I don't use Tailscale because I don't trust their key distribution, and this open source project would solve that, but it might undermine Tailscale's sustainability.
This would be a shame because Tailscale is working well with the open source community: open source clients, working well with distros, working well with Linux DNS stack, supporting a more P2P secure Internet, and documenting their well through it.
The recent events that Glenn Greenwald has reported on has accelerated my move off platforms that have censored, or that can censor.
I won't be able to avoid all of them all of the time, but I can make the alternatives my default.
Federated over centralised. Open over closed. Public domain over ToS.