On Tue, Jul 08, 2008 at 11:08:09AM -0400, Ben Guthro wrote: > Hello > > Perhaps this is my limited understanding of bridging, and I would > appreciate someone to educate me in the way this is supposed to work, > and/or point me to the documentation on where this is covered. > > If I create a routed network using the following xml: > <network> > <name>mybr0</name> > <bridge name="mybr0" /> > <ip address="10.1.220.1" netmask="255.255.255.0" /> > <forward type="route" dev="eth1"/> > </network> > > I would expect to see the eth1 interface enslaved to this bridge. > However, "brctl show" does not show any devices enslaved. No, a routed network config does not enslave any physical interfaces because that would be layer-2 bridging. This is layer-3 forwarding / routing, controlled/constrained via iptables FORWARD rules. > My goal is to have the guest get its IP address from a DHCP server not > on dom0, but out on the network attached to by eth1, but as my guest > comes up, I see its virtual NIC added to the bridge, but without the > connection to eth1, it never has the proper connectivity. You want to have the 'Bridged networking (aka "shared physical device")' config from the follow docs: http://wiki.libvirt.org/page/Networking The config you showed above is really a variant on the other setup labelled 'NAT forwarding (aka "virtual networks")', but without the NAT mangling in the POST_ROUTING chain. Regards, Daniel -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :| -- Libvir-list mailing list Libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list