lsof -i :53
OR
netstat -tulpn | grep ":53 "
sudo systemctl disable systemd-resolved.service
sudo systemctl stop systemd-resolved.service
same problem getting this error:
#Failed to disable unit: Unit file systemd-resolved.service does not exist.
#Failed to stop systemd-resolved.service: Unit systemd-resolved.service not loaded.
I can't deactivate the port, it gives me this error when launching the last command
ash-4.4# sudo systemctl stop systemd-resolved.service
Failed to stop systemd-resolved.service: Unit systemd-resolved.service not loaded. ¿?