Hello. I am using libvirt and KVM for a VDI project. It works fine, great job ! I have only a small issue that bothers some users from time to time. This is libvirt-bin 2.5.0-3ubuntu5.5. When restoring a saved domain that has been many hours or days down, the network address may be taken by some other virtual machine. Then both are in conflict. I found this patch: https://www.redhat.com/archives/libvir-list/2016-October/msg00561.html And I tried setting it in my host but it discards silently my settings after doing virsh net-edit. So It may not be apllied to the 2.5.0 release ? That's what I tried: <dhcp> <leasetime>24h</leasetime> <range start='192.168.122.2' end='192.168.122.254'/> </dhcp> I also tried leasetime -1 with the same results. I also found about adding infinite to the dhcp-range at /var/lib/libvirt/dnsmasq/default.conf. But this file has a comment about it shouldn't be edited and it should be done with net-edit. But I don't know how to add this tag to the network. dhcp-range=192.168.122.2,192.168.122.254,infinite Any hints ? Thank you for your time. -- Francesc Guasch ETSETB - UPC