libvirt DNS disabled at boot

[dee31797]

Libvirt runs a DNS server on interface virbr0 that can be disabled with "virsh net-edit default" and adding <dns enable='no'/> to the XML.  What is the best way to make this the default at start up? Thanks

[jonp]

I think you can add that command to the go file located under the config directory of the flash device.  That should make that happen each time at boot.

[exibit]

For those coming across this in a Google search (like me), the above pointed me in the right direction and I was able to get this to work by adding the following to my /boot/config/go file:

# Disable DNS on KVM so PiHole container can use port 53
# https://forums.unraid.net/topic/81356-libvirt-dns-disabled-at-boot/
EDITOR='sed -i '"'"'s/<\/network>/  <dns enable="no"\/>\n<\/network>/g'"'"'' virsh net-edit default

 

After rebooting, the above allows me to bind a PiHole Docker container to port 53 (without having to give it its own IP address on my local network). I tried using net-update first, but was getting the error "unrecognized section name 'dns'". This hackery of using sed as the editor for net-edit was the only way I was able to get this to work.