Hi Nerijus, the chances are that your ethernet packets are “looping" through physical switches and that they are overwriting the forwarding table of your software bridge. Try to dump the forwarding table (watch -n1 brctl showmacs <brname>). If you see your VM mac address changes port over time, you are hitting that issue. In that case, the following could help to fix that issue. http://stackoverflow.com/questions/11206910/bond-on-software-bridge-connection-issue/12778535#12778535 Cheers, Davide On 28 May 2014, at 01:20, Nerijus Baliunas <nerijus@xxxxxxxxxxxxxxxxxxxxx> wrote: > Hello, > > I have VM attached to bridge br0. VM can see the network (ping works) when > the bridge has ethernet interfaces. But when I create bond or team device > and attach it to a bridge instead of eth interface, VM does not ping > anymore. Any ideas why? > > Thanks, > Nerijus > > _______________________________________________ > libvirt-users mailing list > libvirt-users@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/libvirt-users _______________________________________________ libvirt-users mailing list libvirt-users@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvirt-users