Hi everyone! I have the following setup: domain0 |-domU1 |-domU2 |-domU3 I am running this with libvirt on a XEN server. Right now the server is connected to our office network, but later it will be in a hosted environment. I need domU1 and domU3 to have a public IP, and all of the domUs and the dom0 should have an internal IP address to communicate with each other. So this is what I would like to achieve: domain0 192.168.122.1 |-domU1 192.168.122.2 192.168.1.45 (later this will be changed to the public IP) |-domU2 192.168.122.3 |-domU3 192.168.122.4 192.168.1.46 (this will also be changed to a public IP) On domain0 I have the following network interfaces: br0 Link encap:Ethernet HWaddr 54:04:a6:66:c4:be inet addr:192.168.1.44 Bcast:192.168.1.255 Mask:255.255.255.0 virbr0 Link encap:Ethernet HWaddr 52:54:00:fe:88:0c inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0 This way everything is working fine, except that I don't want domain0 to have a public IP (which is 192.168.1.44 in this case) So is it possible somehow to setup br0 on domain0 without it having an IP address? Thank you, Zoltan Lippai