Subject: Re: Networking problems
To: Jonathan A. Kollasch <jakllsch@kollasch.net>
From: David Laight <david@l8s.co.uk>
List: port-xen
Date: 04/07/2006 07:18:35
On Thu, Apr 06, 2006 at 02:19:26PM -0500, Jonathan A. Kollasch wrote:
> This could explain the duplicates, and other problems.
> 
> When selecting a MAC address for the virtual interface (esp. in
> bridged configurations) the lower nibble of the most significant
> byte should be 2, 6, A, or E (the locally administered blocks).
> 0, 4, 8, and C should be avoided because they are blocks IEEE
> allocates from.

It is fairly pointless differenciating between locally and globally
administered addresses.  There are plenty of cards out there that
have 'local' addresses (and many that have 'global' addresses the
IEEE knows nothing about).

	David

-- 
David Laight: david@l8s.co.uk