[libvirt] RFC: make <mac> element required?

[Michal Prívozník]

Hi,

I am about to fix https://bugzilla.redhat.com/show_bug.cgi?id=616721
It seems to me that problem is libvirt inserts a new element <mac 
address='...'> during parsing interface XML with random mac address 
which result in error described in BZ.

I am not sure wheter to fix it just in virsh or in 
virDomainDetachDevice() as well. If in virsh, then other application may 
fail without knowing why. But isn't the second option too aggressive?

Michal Privoznik