From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: Arjan van de Ven <arjan@linux.intel.com>
Cc: David Laight <David.Laight@ACULAB.COM>,
Darren Hart <dvhart@linux.intel.com>,
Alan Cox <alan@linux.intel.com>,
Tomoya MORINAGA <tomoya.rohm@gmail.com>,
Alan Cox <alan@lxorguk.ukuu.org.uk>,
David Miller <davem@davemloft.net>,
linux-kernel@vger.kernel.org, jeffrey.t.kirsher@intel.com,
paul.gortmaker@windriver.com, jdmason@kudzu.us,
netdev@vger.kernel.org
Subject: Re: [PATCH] pch_gbe: Use a randomly generated MAC instead of failing probe
Date: Mon, 16 Jan 2012 16:44:24 +0000 [thread overview]
Message-ID: <20120116164424.GA19621@sirena.org.uk> (raw)
In-Reply-To: <4F1451BD.9030904@linux.intel.com>
On Mon, Jan 16, 2012 at 08:35:09AM -0800, Arjan van de Ven wrote:
> On 1/16/2012 8:20 AM, David Laight wrote:
> > Since multiple interfaces on a single system are unlikely
> > to be connected to the same LAN segment, it doesn't really
> > matter if they use same MAC address.
> I think you missed the point. All embedded devices have the same fs, so
> if you have 2 boxes of the same model/brand on the same network, they'd
> have the same MAC. That's generally frowned upon by network
> administrators ;-)
This is generally handled by putting the MAC into a board-specific bit
of flash that isn't part the main firmware (for example, the bootloader
configuration) - for a lot of applications random generation doesn't
help that much as entropy is hard to come by.
next prev parent reply other threads:[~2012-01-16 16:44 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-14 6:44 Darren Hart
2012-01-14 8:14 ` David Miller
2012-01-14 15:54 ` Darren Hart
2012-01-14 19:56 ` David Miller
2012-01-14 20:29 ` Joe Perches
2012-01-14 21:46 ` Alan Cox
2012-01-14 22:36 ` Darren Hart
2012-01-16 7:38 ` Tomoya MORINAGA
2012-01-16 12:31 ` Alan Cox
2012-01-16 15:42 ` Darren Hart
2012-01-16 16:07 ` Arjan van de Ven
2012-01-16 16:20 ` David Laight
2012-01-16 16:35 ` Arjan van de Ven
2012-01-16 16:44 ` Mark Brown [this message]
2012-01-16 17:02 ` Alan Cox
2012-01-16 21:06 ` Rick Jones
2012-01-16 15:38 ` Darren Hart
2012-01-14 8:15 ` David Miller
2012-01-14 8:18 ` Cong Wang
2012-01-14 15:45 ` Darren Hart
2012-01-16 15:22 ` Nick Bowler
2012-01-16 23:04 ` David Miller
2012-01-16 23:07 ` Darren Hart
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