I have an ubuntu 22.04 system I'm running dnsdist on. It's easier to have dnsdist listen on 0.0.0.0, but it can't because dnsmasq it running. Here's the caveat, the dnsmasq apt package isn't actually installed, so I can't use systemctl to disable it. Also, the system has no /etc/NetworkManger/NetworkManager.conf, so I can't disable that there. Must be something in systemd, but...
root@thay:/lib# cd systemd/
root@thay:/lib/systemd# find . -type f -print0 | xargs -0 grep -i dnsmasq
root@thay:/lib/systemd#
Here's how dnsmasq is running
ps ax | grep dnsmasq | grep -v grep
955 ? S 0:00 /usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro --dhcp-script=/usr/lib/libvirt/libvirt_leaseshelper
956 ? S 0:00 /usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro --dhcp-script=/usr/lib/libvirt/libvirt_leaseshelper
So what is starting this, and how do I disable it? Here's another weird thing
root@thay:/etc/systemd/system# systemctl list-unit-files | grep dnsmasq
dnsmasq.service masked enabled
It's masked, and shouldn't even start, which means that some other process is starting this outside of systemd context.
systemd-dnsmasq, which is a different package. Readman systemd-dnsmasq. – waltinator Mar 12 '24 at 23:11