Running your own dnsmasq with libvirtd¶ On linux host servers, libvirtd uses dnsmasq to service the virtual networks, such as the default network. A new instance of dnsmasq is started for each virtual network, only accessible to guests in that specific network. If you are running your own "global" dnsmasq, then this can cause your own dnsmasq to fail to start (or for libvirtd to fail to start its