There are managed switches that are designed to prevent the migration pains, but they tend to be spendy.  I tend to build from clone without networking and configure it after I can get to the guest os.  Or use kickstart, but then you don't exactly have a clone.

On Nov 5, 2011 9:42 AM, "Benjamin Browning" <benb@bensbrowning.com> wrote:
On Fri, Nov 4, 2011 at 5:34 PM, der.hans <PLUGd@lufthans.com> wrote:
> The clone notices that it's no longer on the same (virtual) hardware, so
> udev rules move to a new networking device, but the networking rules don't
> get updated. In other words, no networking, so no talking to the dhcp
> server.

If you do this, be mindful that spinning up a clone VM without
disabling the networking until you reconfigure it can and will cause
arp poisoning...

~Ben
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