Have you - Tested without VLAN tags? - Verified IP Forwarding is enabled, I usually see this implemented in /etc/sysctl.conf and not written directly to the /proc files - Disabled all the transparent bridge filters, typicallly at /proc/sys/net/bridge/* again, although you can write directly to these files I'd recommend you simply add the commands to your sysctl.conf - Verified any personal FW is configured properly.
Tony On Thu, Aug 22, 2013 at 7:39 AM, Stephan von Krawczynski <[email protected]> wrote: > Hello all, > > I'd like to do something very simple - at least that's what I thought ;-) > I want a guest to have access to a network just as if he was connected to the > real card, but set up as bridge on the host and virtio network driver. The > guest should be able to configure and use some or maybe even many 802.1q vlans > on this network and the traffic should go out tagged. > > So I setup the hosts bridge and connected an intel network card and a qemu > virtio card. Now the problem: No vlan-tagged traffic from the physical > interface reaches the guest at all, and no vlan-tagged traffic from the guest > reaches the physical net over the bridge. One major reason for this is the > vlan offloading by the host interface card (intel). Another seems to be that > arp requests are somehow not going through the bridge for the vlans. > > I hope that someone here has used 802.1q vlans inside guests before and can > share some tips how to make this work. Because out-of-the-box it does not. All > system are linux of course and with latest kernels (3.10.9 currently). > qemu is 1.5.2. > Thanks for any hints. > > -- > Regards, > Stephan > >
