Server not available despite connected

What is the issue?

Hi all, I use tailscale already from a long time, however now being on holidays and trying to connect my phone from hotel network I experience strange issues. Initially the connection was established but as in theory connection type was direct I could ssh to serwer, I could ping it, hoe er when I requested more complex ssh command or tried to open any server hosted service/website the connection was unreachable. Ssh commands where answered only few lines top and then it hangs. With chat I was able to set connection through DERP with sudo systemctl set-environment TS_DEBUG_ALWAYS_USE_DERP=true sudo systemctl restart tailscaled And it worked. All services on server were available... For like an hour. Now, despite server is shown in control panel as connected it is unavailable. List of relays is empty Any ideas what is going on? Clearly direct connection is not stable enough and derp was kinda disconnected and not reconnected automatically?

Steps to reproduce

No response

Are there any recent changes that introduced the issue?

No response

OS

Linux

OS version

Debian

Tailscale version

Latest

Other software

No response

Bug report

No response