On Friday 20 February 2009 13:54:20 Francisco José Martín wrote: Hi, > We have tried several ways to assign a static ip address to the guest os > eth0 device on boot, but we didn't success. Is there any easy way to do it? Yes. Create a network definition, specify a host element to the dhcp definition, attach the machine to the created bridge and it should work. <network> <name>sample</name> <forward dev='eth0' mode='nat'/> <bridge name='intbr0' stp='on' forwardDelay='0' /> <ip address='192.168.122.1' netmask='255.255.255.0'> <dhcp> <range start='192.168.122.2' end='192.168.122.254' /> <host mac='AA:BB:CC:DD:EE:FF' ip='192.168.122.102'/> </dhcp> </ip> </network> Snippet for the domain definition: <interface type='bridge'> <mac address='AA:BB:CC:DD:EE:FF'/> <source bridge='intbr0'/> <target dev='vnet0'/> </interface> > When the guest OS is booted, the eth0 device exists, but is not up, and > doesn't have the IP. Is dnsmasq installed and running? Does the guest system use dhcp? Uli -- Libvir-list mailing list Libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list