[arm-allstar] HamVoIP on T-Mobile home service

[Patrick Perdue]

Greetings:

Today, I was helping someone who is using T-Mobile's 5G home internet 
service with a clear node. Everything was working fine until just a few 
days ago, but then they were suddenly unable to connect to most nodes. A 
few worked here and there, but mostly not. Everything was 
auto-congesting. Any DNS query, regardless of what server was used, took 
almost exactly 5 seconds. Interestingly, the clear node seems to have 
1.1.1.1 set up as the default resolver. I tried quad 9, a couple of root 
nameservers, and 127.0.0.1. None of that made any difference.

No ICMP, so couldn't ping out, either. I tried switching from DNS to 
flat file lookup, but that didn't help. I eventually solved the problem 
by routing his connection through a Wireguard VPN. They have the same 
problem when using their phone as a hotspot.

I was doing all this remotely, so I have no idea about what hardware is 
being used as the gateway.

Just wondering if anyone else has seen this specifically with T-Mobile. 
Naturally, their CSR's don't have a clue.


73

N2DYI