I have two sensors which broadcast their data using UDP. I configured them to use different ports.
If I connect only one sensor, I receive the packets using
nc -ul port without any trouble.
If I connect both sensors, I get no packets via netcat from any of the sensors. However, the packets are properly detected by wireshark.
I just found out that it works correctly on another PC (same OS Ubuntu 16, a fresh installation). Anybody has an idea how to check what causes the problem on the first PC?