

Honestly, there were so many fundamental changes in the 13 upgrade for certain packages that I had to fix on a couple of machines that I’d be hesitant to try no-scoping the 11 > 13 upgrade.
I flew by the seat of my pants and managed to pull off 10 directly to 12, but I wouldn’t do it for this one.
Yes, since Tailscale is based on wireguard.
Probably not the best practice, though, since any device that connects will be allowed to use the service if there is no authentication on the cert.