nProbe IPS failure on Rocky Linux 9

[cardigliano]

nProbe IPS fails on Rocky Linux 9 due to a double bind to two sockets tied to the same process pid. For some reason this is not allowed on RH kernels (this is working on Ubuntu/Debian). This should be addresses avoiding the creation of the second socket if possible.

Failure message:

[LinuxSocketMonitor.cpp:103] ERROR: Unable to bind socket

Commands to reproduce it:

• sudo ntopng -i tcp://127.0.0.1:1234
• sudo nprobe -i ens192 --zmq tcp://127.0.0.1:1234 --agent-mode