On Sun, Feb 08, 2009 at 10:34:06PM +0100, Remko Nolten wrote: > Hi! > > For a shared virtual hosting project with some friends we need a pretty > specialized network configuration. Because we have virtually no time for > experimenting (no pun intended), and the hosting organization has no > experience with libvirt/KVM configurations they suggested to try and ask > here. > > So, this is the situation: We have a server with one physical > connection. Each user gets one virtual machine with its own IP-address > (we have our own ip-range). The hosting organization gives us one "main" > address 'A' with netmask 255.255.255.0 (/24) and a default gateway for > our host machine. Besides this we get a number of addresses B1, B2, etc. > with netmask 255.255.255.255 (/32) and without a default gateway. The > switch just routes the traffic to our server for each ip-address we own > (A and Bn). > > According to our hosting organization, the normal solution is to > configure a loopback interface for each of the ip-addresses on the > server so you can configure your software just to use one of the > addresses. But we are not sure how this will work out in our virtual > environment. Our intuition tells us we need to use the routing network > forwarding mode, but when we bring the server to the data center we > don't want to have any surprises. :) Hi there. This actually sounds like a fairly standard configuration. What you want to do is set the single NIC on your server to bridge, following the instructions at http://wiki.libvirt.org/page/Networking#Bridged_networking_.28aka_.22shared_physical_device.22.29 . Each VM can then have its own IP, which in your case sounds like it will be static. Hope this helps, --Hugh > > Here at home I don't have to possibility to create similar circumstances > as in the data center due to some restriction from my ISP, so I hope > someone can tell me if our intuition is correct or that we need to use > some other method. > > Thanks in advance! > > -- > Remko Nolten > Tel: 06-45600767 > E-mail: remko@xxxxxxxxx > > > > -- > Libvir-list mailing list > Libvir-list@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/libvir-list -- Libvir-list mailing list Libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list