[Bug 1029430] Re: KVM guests networking issues with no virbr0 and with vhost_net kernel modules loaded

[Lorin Hochstein]

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.

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https://bugs.launchpad.net/bugs/1029430

Title:
  KVM guests networking issues with no virbr0 and with vhost_net kernel
  modules loaded

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