Ok, this bug seems to be about KVM networking bugs in Ubuntu. I don't see anything specific for upstream OpenStack developers to debug or fix. Marking as Invalid.
If there is some specific OpenStack upstream issue diagnosed, it's probably best to file a new bug with the details of the specific issue clearly isolated from everything else going on in this bug.
Ok, this bug seems to be about KVM networking bugs in Ubuntu. I don't see anything specific for upstream OpenStack developers to debug or fix. Marking as Invalid.
If there is some specific OpenStack upstream issue diagnosed, it's probably best to file a new bug with the details of the specific issue clearly isolated from everything else going on in this bug.