Tailscale raises $100M

What's the state of affairs when it comes to self-hosting?

I'm waiting to deploy either Nebula, ZeroTier, or Tailscale, but we don't want to rely on third parties for auth or coordination.

Nebula is the only completely self hosted option I think. But I couldn't get NAT traversal to work and it's the main reason I want a system like this.

Tailscale hosts all the auth and coordination stuff and uses SSO.

Zerotier lets you host an auth server, which also handles connections, but when required some already-established connections go through zerotier servers (encrypted).

We use the latter option at work