Mismatch in the count of 'unix' network connections between psutil.net_connections() and system tools.

[universal-extensions]

Summary

• OS: Rocky Linux 8.7
• Architecture: x86_64
• Psutil version: psutil 6.0.0
• Python version: python 3.11.6

Description

While using psutil.net_connections('unix') or counting 'unix' connections in psutil.net_connections('all'), I noticed that the number of connections returned is lower than expected. Specifically, the count does not match the output of the netstat command or the data available in /proc/net/unix.

Steps to Reproduce

Run the psutil.net_connections('unix') function in a Python script.
Compare the resulting count of connections to the output of netstat or the content of /proc/net/unix.