[squid-users] SQUID refuses to listen on any TCP Port

[ben]

Hello,

It looks like that if I start installing it right after OS installation, 
it works. But not if I install any packages, for example, make, 
gcc,strongswan and so on. once it stop working, it will not work anymore 
even if I remove all aforementioned packages. reboot also doesn't help. 
I also tried it on Debian 11. no luck either! it only works in old ubuntu 16
I can be 100% sure that squid is not listening on any TCP ports. running 
these commands looks fine

Thanks for your being patient and kind

root at host8d66c97880:~# netcat -v -l -4 34568
Listening on 0.0.0.0 34568
^C
root at host8d66c97880:~# netcat -v -l -6 34568
Listening on :: 34568

I configured it to listen on 34568


> netcat -v -l -6 4444
> netcat -v -l -4 4444