I have resolved the issue of dnsmasq not starting. The cause was that virbr0 was listed in /etc/network/interface. Removing it solved the problem. This was my error since I had put it there while trying to configure virbr0 without dnsmasq (which I have now done sucessfully).
I still consider it a bug that there is no obvious way to edit the configuration file for dnsmasq when it is started by libvirtd and would still be interested in an answer to that question as well as better documentation for the libvirtd/dnsmasq configuration. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to dnsmasq in Ubuntu. https://bugs.launchpad.net/bugs/1766939 Title: dnsmasq won't start [Ubuntu 18.04] Status in dnsmasq package in Ubuntu: New Bug description: System: Ubuntu 18.04 All updates: Current Could also be a libvirt problem. When libvirtd tries to start dnsmasq, I get the following error and dnsmasq fails to start: libvirtd[2125]: 2018-04-24 20:38:47.073+0000: 2178: error : virNetDevIPAddrAdd:223 : Failed to add IP address 1 error: Failed to add IP address 10.1.2.1/24 bcast 10.1.2.255 to virbr0 This was previously working. If I edit /etc/libvirt/qemu/networks/default.xml and change the name of the interface to virbr1 dnsmasq starts up correctly, change the name back to virbr0 and it fails. Tried a find on the filesystem of '*virbr*' to see if there were any files left that shouldn't be there, but found only a couple of flag files (don't remember the name), 1 under /var/run and the other I think was in /var/lib/libvirt/dnsmasq. Deleted those but stll doesn't work. I have also shutdown any other services that were binding to the virbr0 interface while testing this. How can I edit /var/lib/libvirt/dnsmasq/default.conf, or in some other way pass my own config parameters to dnsmasq? Instructions inside the file say to use "virsh net-edit default", but that edits /etc/libvirt/qemu/networks/default.xml which is a different file? If I edit default.conf with a normal editor, it gets overwritten by libvirtd. It appears that the dnsmasq config file is generated automaticlly by libvirtd and then dnsmasq is started by libvirtd, so I can't see anywhere to put my own config options, short of rebuilding libvirtd from source. According to the man page adding the option 'port=0' to the dnsmasq configuration will disable dns so that dnsmasq will no longer listen on port 53. This is what I would like to do. It would be nice to know how to create the virtual NIC needed to route traffic from the VM's onto my network. Don't want to bridge onto LAN interface, because system is connected to multiple vlans and wireless when traveling. I can handle DNS and DHCP using bind9 and isc-dhcp-server and would prefer to run 1 instance of these servers for both the host and all guest VM's. Seems to defeat the purpose of a cache to run a seperate caching dns server for the host and for the VM's, and then another if you have multiple virtual network interfaces for different VM's. If I could do this easily, then I wouldn't need dnsmasq at all. Thank You Natu To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dnsmasq/+bug/1766939/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
