From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <shemminger@vyatta.com>
Received: from mail.vyatta.com (mail.vyatta.com [76.74.103.46])
	by huchra.bufferbloat.net (Postfix) with ESMTP id 40CED20016F
	for <bloat-devel@lists.bufferbloat.net>;
	Thu, 23 Jun 2011 16:01:09 -0700 (PDT)
Received: from localhost (localhost.localdomain [127.0.0.1])
	by mail.vyatta.com (Postfix) with ESMTP id 047CD14100C0;
	Thu, 23 Jun 2011 16:28:53 -0700 (PDT)
X-Virus-Scanned: amavisd-new at tahiti.vyatta.com
Received: from mail.vyatta.com ([127.0.0.1])
	by localhost (mail.vyatta.com [127.0.0.1]) (amavisd-new, port 10024)
	with ESMTP id lDvj0fUByGQ4; Thu, 23 Jun 2011 16:28:52 -0700 (PDT)
Received: from nehalam.ftrdhcpuser.net
	(static-50-53-80-93.bvtn.or.frontiernet.net [50.53.80.93])
	by mail.vyatta.com (Postfix) with ESMTPSA id 1EF101829555;
	Thu, 23 Jun 2011 16:28:52 -0700 (PDT)
Date: Thu, 23 Jun 2011 16:28:49 -0700
From: Stephen Hemminger <shemminger@vyatta.com>
To: Juliusz Chroboczek <jch@pps.jussieu.fr>
Subject: Re: pure routing.... generating a sane mac addr on the wndr3700 in
	cerowrt?
Message-ID: <20110623162849.290c552b@nehalam.ftrdhcpuser.net>
In-Reply-To: <7iei2kupd4.fsf@lanthane.pps.jussieu.fr>
References: <BANLkTimi1NoNaBrZSWkgsij2OjCWvVTEjA@mail.gmail.com>
	<7iei2kupd4.fsf@lanthane.pps.jussieu.fr>
Organization: Vyatta
X-Mailer: Claws Mail 3.7.9 (GTK+ 2.24.4; x86_64-pc-linux-gnu)
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Cc: openwrt-devel@lists.openwrt.org,
	bloat-devel <bloat-devel@lists.bufferbloat.net>
X-BeenThere: bloat-devel@lists.bufferbloat.net
X-Mailman-Version: 2.1.13
Precedence: list
List-Id: "Developers working on AQM, device drivers,
	and networking stacks" <bloat-devel.lists.bufferbloat.net>
List-Unsubscribe: <https://lists.bufferbloat.net/options/bloat-devel>,
	<mailto:bloat-devel-request@lists.bufferbloat.net?subject=unsubscribe>
List-Archive: <https://lists.bufferbloat.net/pipermail/bloat-devel>
List-Post: <mailto:bloat-devel@lists.bufferbloat.net>
List-Help: <mailto:bloat-devel-request@lists.bufferbloat.net?subject=help>
List-Subscribe: <https://lists.bufferbloat.net/listinfo/bloat-devel>,
	<mailto:bloat-devel-request@lists.bufferbloat.net?subject=subscribe>
X-List-Received-Date: Thu, 23 Jun 2011 23:01:09 -0000

On Fri, 24 Jun 2011 00:58:31 +0200
Juliusz Chroboczek <jch@pps.jussieu.fr> wrote:

> > I figure it should come from the second wireless interface, get the
> > local bit defined, and go to the top of the allowable range that the
> > wireless interface pulls from to generate it's SSIDs
> 
> Nah.  Just pull 6 bytes from /dev/random, set the local bit, and unset
> the group bit.

There is nice random_ether_addr in kernel to meet your needs.