[libvirt-users] libvirtError: Unable to add bridge br0 port vnet0: Operation not supported

[Daniel P. Berrange]

On Wed, Oct 16, 2013 at 01:52:57PM +0200, Maciej Gałkiewicz wrote:
> Hi
> 
> I am using Libvirt 1.1.2 with Openstack Havana (RC2, nova-network) and
> openvswitch 1.4.2+git20120612-9.1. Libvirt vif driver (
> nova.virt.libvirt.vif.LibvirtGenericVIFDriver) generates config likes this:
> 
>     <interface type='bridge'>
>       <mac address='fa:16:3e:44:30:a4'/>
>       <source bridge='br0'/>
>       <model type='virtio'/>
>       <filterref filter='nova-instance-instance-000003d8-fa163e0b07a7'/>
>       <address type='pci' domain='0x0000' bus='0x00' slot='0x03'
> function='0x0'/>
>     </interface>
> 
> and instance fails to start with:
> 
> 2013-10-16 11:16:13.004+0000: 11943: info : virNetDevProbeVnetHdr:122 :
> Enabling IFF_VNET_HDR
> 2013-10-16 11:16:13.105+0000: 11943: error : virNetDevBridgeAddPort:370 :
> Unable to add bridge br0 port vnet0: Operation not supported
> 
> If I add <virtualport type='openvswitch' /> inside <interface
> type='bridge'>...</interface> it seems to work fine. Is it nova-network or
> libvirt bug or some misconfiguration?

Sounds like a host mis-configuration related to kernel bridge support
to me.

Regards,
Daniel
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