I've got a strange problem, the same flow (copy/paste) works on my notebook (Manjaro Linux, Kernel 5.15.49-1), but it refuses to work on a RaspberryPi (Model B, Dietpi v8.5.1, Kernel 5.15.32+)
The flow uses the MQTT-in Node to read a electricity meter reading from TheThingsNetwork in the Cloud, so I'm not running any local Mosquitto.
While the flow on my notebook connects immediately, it refuses to connect on the Pi
I played around with different auth settings in the flow on the Pi, but nothing changed.
The Network seems to be reachable on the Pi, at least I can get fetch different stuff via the node-red http-in node. It's hard to believe, that there's a special ipfilter flaw, that filters out only MQTT traffic.
The TTN console is full of "invalid token" errors:
Thank you for any help!