On Thu, 2014-07-10 at 10:17 +0200, Tom Gundersen wrote:

The name contains then xen handle, which is not guaranteed to be
stable between restarts, so label this NET_NAME_ENUM.

FWIW the N'th interface for domain with domid D will always be named
vifD.N.

If you reboot domain D then it's domid will change to E and the new
device will be vifE.N.

I don't know if that counts as predictable as far as the interface you
are introducing is concerned.

Ian.