http://hg.fedorahosted.org/hg/python-virtinst/file/ae6ca033e8c5/virtinst/util.py#l181
 indicates that:
- 00:16:3E allocated to xensource 
- 52:54:00 used by qemu/kvm 

http://libvirt.org/drvesx.html indicates:
- 00:0c:29 and 00:50:56 are owned by vmware

Further, I know that
- d0-0d used by Eucalyptus

maybe it is sufficient to simply apply to these MAC addrs what we
already do to xen.  It just seems that then we are vulnerable to
device/driver ordering issues.

One other thing to consider is that kvm implements pci hotplug for
network devices (http://www.linux-kvm.org/page/Hotadd_pci_devices).  So
whitelisting of kvm addresses would result in inconsistent naming with 2
network devices being added and removed in somewhat arbitrary order.

-- 
ease cloning of virtual images by disabling mac address rules
https://bugs.launchpad.net/bugs/341006
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