Difficulty with iOS tailscale client

Hello -

I have a small tailnet that consists of a few Debian boxes that I manage via ssh from
an iPhone.

The Linux boxes are working great, all are up to date and no issues. The issue I have is that the iPhone with current client just times out. I’ve tested it on WiFi and cellular, same issue. I’ve tried reauthenticating everything and reinstalled on the iPhone.

From a Linux host:

  • tailscale ping works it has a direct path to the iPhone.
  • tailscale ping --tsmp times out when pinging the iPhone
  • tailscale status shows that traffic is going to the iPhone, but nothing comes back.

Does anyone have any suggestions for how to troubleshoot this further? This has worked flawlessly for a several months.