CRIT Error in dnsmasq configuration: failed to create listening socket for port 53: Address in use

[deHakkelaar]

@eappell

Please say more.

Post results for below ones pls?

@deHakkelaar

Maybe below one shows which process is its parent if dnsmasq is still running:

pstree -pst $(pidof -s dnsmasq)

Or if you browse the systemd journal since --boot with below:

sudo journalctl --full --no-hostname --boot

And search the journal by pressing the forward slash "/" plus type in dnsmasq plus press enter.

@deHakkelaar

ps -o uid,user,gid,group,pid,cmd -C dnsmasq -C pihole-FTL

Also do you have this "Virtual Machine App" installed on the NAS as pointed out in the link below?

@Stefan_Roggatz

The funny thing is: I figured out what it was.
I installed the Virtual Machine App on my UGREEN NAS and this is the trouble maker.
As soon as I deinstalled the VM App everything is working again.

Strange.