From: Stephen Hemminger <shemminger@linux-foundation.org>
To: Bernd Petrovitsch <bernd@firmix.at>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Get physical MAC address
Date: Tue, 1 Jan 2008 18:12:12 -0800 [thread overview]
Message-ID: <20080101181212.1e7b5ff0@deepthought> (raw)
In-Reply-To: <1199228848.3912.651.camel@gimli.at.home>
On Wed, 02 Jan 2008 00:07:28 +0100
Bernd Petrovitsch <bernd@firmix.at> wrote:
> On Mon, 2007-12-31 at 12:39 +0700, Theewara Vorakosit wrote:
> [...]
> > I get MAC address from ioctl. However, ifconfig can change this MAC
> > address. Can I get a real physical MAC address of the NIC?
>
> - You can get the initial MAC address right after bootup before anyone
> changes it.
> - Some (if not many if not all) of the drivers output it on
> driver initialization time so you could read it from `dmesg` or
> some /var/log/messages or .....
> There is no "get initial MAC address" ioctl (but it's not that
> complicated to implement it).
>
> Bernd
There is already ethtool interface to get what you want (ETHTOOL_GPERMADDR)
--
Stephen Hemminger <stephen.hemminger@vyatta.com>
next prev parent reply other threads:[~2008-01-02 2:14 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-31 5:39 Get physical MAC address Theewara Vorakosit
2008-01-01 23:07 ` Bernd Petrovitsch
2008-01-02 2:12 ` Stephen Hemminger [this message]
2008-01-02 2:42 ` Jon Masters
2008-01-02 3:12 ` Kyle Moffett
2008-01-02 4:58 ` Matt Domsch
2008-01-02 9:31 ` Bernd Petrovitsch
[not found] <9Gmk2-1M1-5@gated-at.bofh.it>
2007-12-31 11:11 ` Bodo Eggert
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