Re: [libvirt] Making DHCP leases available to local DNS server through dnsmasq

Hello everyone, I have multiple virtual networks defined on my Server: # virsh net-list --all Name State Autostart Persistent ---------------------------------------------------------- default active yes yes ... virtual-mgt-5 active yes yes ... When a VM is started on one of them with an interface which needs the dnsmasq DHCP server to get its IP address/len, it remains inaccessible with the FQDN once the IP information is acquired. The default values are used for each dnsmasq instance: ● libvirtd.service - Virtualization daemon Loaded: loaded (/lib/systemd/system/libvirtd.service; enabled; vendor preset: enabled) Active: active (running) since Sat 2017-06-10 19:48:58 CEST; 3ms ago Docs: man:libvirtd(8) http://libvirt.org Main PID: 25365 (libvirtd) Tasks: 35 (limit: 4915) Memory: 27.1M CPU: 28ms CGroup: /system.slice/libvirtd.service ├─22262 /usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro --dhcp-script=/usr/lib/libvirt/libvirt_leaseshelper ├─22263 /usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/default.conf --leasefile-ro --dhcp-script=/usr/lib/libvirt/libvirt_leaseshelper ... ├─24061 /usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/virtual-mgt-5.conf --leasefile-ro --dhcp-script=/usr/lib/libvirt/libvirt_leaseshelper ├─24062 /usr/sbin/dnsmasq --conf-file=/var/lib/libvirt/dnsmasq/virtual-mgt-5.conf --leasefile-ro --dhcp-script=/usr/lib/libvirt/libvirt_leaseshelper ... ├─25365 /usr/sbin/libvirtd └─25384 /usr/sbin/dnsmasq --help I wonder whether the option "--leasefile-ro" gets in the way or not: there must be a key=value in /etc/libvirt/qemu/networks/<virtual_network>.xml to enable this behavior, but could not find it in the Network XML format <https://libvirt.org/formatnetwork.html>;.