I have two Umbrels. One a Pi4 running the new OS. Tailscale never goes offline. However I have NUC running the new OS and the Tailscale connection always goes offline. I have deleted it and reinstalled. Same issue. It’s not a key expiration issue. It’s something else. Anyone else having or had the same issue?
I think it’s probably related to either network settings, power management or system specific configurations on the NUC. I recommend first checking Tailscale’s logs, checking firewall and DNS settings, and examining power management or network interface priority.