Re: [libvirt-users] How assign static ip using NAT?

On 03/14/2014 05:12 PM, Peng Yu wrote: You need to edit the network named "default" (since that is the network your guest is attaching to) to add a static dhcp host entry. There are a couple different ways to do this: 1) using the command "virsh net-edit default" (as root) to add a <host> entry to the <dhcp> section of the network, similar to the example here: http://www.libvirt.org/formatnetwork.html#elementsAddress After you have edited this, you will need to destroy and re-start the network, as well as shutting down and re-starting your guest, e.g: virsh net-destroy default; virsh net-start default; virsh shutdown $guestname (wait while guest shuts down completely) virsh start $guestname 2) If your libvirt is new enough (I think 0.10.2 is new enough), use the "virsh net-update" command to add the new dhcp host entry without restarting the network, for example: virsh net-update default add dhcp-host \ '<host mac="52:54:00:6c:a7:6d" ip="192.168.122.10"/>' \ --live --config (note that "--live" tells it to make the change take effect immediately, and "--config" tells it to also make the change persistent, so that it will still be there the next time the network is stopped and restarted). In case (2), you will still need to do something to force your guest to re-request a DHCP address. Usually this can be done by simply disabling and re-enabling the interface in the guest itself.