Unstable UDP connection iPhone to Windows cloud machine with latency around 30ms


I use my iPhone to send head tracking UDP packets from SmoothTrack to OpenTrack.

Until a few days ago it worked fine. Now it works for about a minute, then SmoothTrack aborts with “Can’t assign requested address”.

When I connect the phone to my local machine it works fine. The phone is either on 2.4 or 5 GHz wifi.

Can this be a ZeroTier connection problem?

What I can do to investigate?

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