Comment 20 for bug 1029430

I'm running into an issue with similar symptoms on precise, but I don't have the vhost_net kernel module loaded on my compute nodes, and adding in the iptables rule doesn't seem to help. I'm at a loss as to how to try to debug this, since DHCP leases work when I set:

libvirt_use_virtio_for bridges=false

But they fail if I set it to true. I've tested with quantal and raring guests, and both fail to get an IP via DHCP if the above flag is true, but they succeed if above flag is false.