From mboxrd@z Thu Jan  1 00:00:00 1970
From: Markus Armbruster <armbru@redhat.com>
Subject: Re: QEMU-KVM 'Random' Virtual MAC Address.
Date: Wed, 02 May 2012 08:58:06 +0200
Message-ID: <m3bom73w8x.fsf@blackfin.pond.sub.org>
References: <SNT112-W2368582EF2C45500C59A1F90290@phx.gbl>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Cc: QEMU-KVM Mailing List <kvm@vger.kernel.org>
To: Veruca Salt <verucasaltuk@hotmail.co.uk>
Return-path: <kvm-owner@vger.kernel.org>
Received: from mx1.redhat.com ([209.132.183.28]:35090 "EHLO mx1.redhat.com"
	rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
	id S1751994Ab2EBG6I (ORCPT <rfc822;kvm@vger.kernel.org>);
	Wed, 2 May 2012 02:58:08 -0400
In-Reply-To: <SNT112-W2368582EF2C45500C59A1F90290@phx.gbl> (Veruca Salt's
	message of "Tue, 1 May 2012 14:52:00 +0000")
Sender: kvm-owner@vger.kernel.org
List-ID: <kvm.vger.kernel.org>

Veruca Salt <verucasaltuk@hotmail.co.uk> writes:

> Hello.
> When creating an NIC in qemu, I have found that the default address on XP virtual machines is the same for two VM's on different physical boxes.
> Before we go off building an assignment programme to retrofit VM's upgraded to the fit we're planning, will differently imaged VM's, with different Computer Names and other data, produce different randomised VMAC's, or will they always set to the standard default?
>
> If they do, we are in a happier place already.

The default MAC address is 52:54:00:12:34:N, where N is 0x56 for the
first NIC, 0x57 for the second, and so forth.  Best not to rely on the
order of NIC initialization.