2013/10/2 Jorge Fábregas <jorge.fabregas@gmail.com>
On 10/01/2013 09:29 AM, James Gibbon wrote:
>  Would be grateful if someone could suggest a way to disable the networking in the
> cloned VM within the XML, if that's possible.

I have no idea if it's possible to "disable" the NIC on the VM
definition but you could boot into runlevel 1 (where there is no
network) and perform the changes there.  You may do this by passing a 1
to the end of the kernel line (during GRUB boot section).
try : virsh domif-setlink