[linsomniac]

I've run into a few odd instances of headscale not working where I'd expect it to and I don't understand how it's failing.

- Connected to my phone hotspot in the car outside my son's therapist, it worked for months, but then for 2-3 weeks tailscale wouldn't connect. Browsing worked fine. In the 6 weeks since then, it's worked fine.

- A couple nights ago I was in a Holiday Inn Express. I could successfully connect to tailscale, and ssh to machines at the office (which has tailscale on a public IP, but couldn't pass traffic to my machine at home (behind NAT, we have a DERP next to the machine at the office and also another one on the headscale node at AWS). Maybe they blocked the DERP port?

[pcarroll]

I have found that residential ISP routers are notoriously flaky. It doesn't take much to confuse them. A lot of edge cases could be just this.