At least with Ubuntu server it is pretty easy. The system generated /etc/resolv.conf file even tells you how to disable system control in the comments of the fi

At least with Ubuntu server it is pretty easy. The system generated /etc/resolv.conf file even tells you how to disable system control in the comments of the file. sudo apt install -d -y unbound sudo systemctl stop systemd-resolved sudo systemctl disable systemd-resolved sudo unlink /etc/resolv.conf sudo sh -c 'echo "nameserver ::1 127.0.0.1" >/etc/resolve.conf sudo apt install -y unbound