From: Peter Korsgaard <jacmet@sunsite•dk>
To: David Brownell <david-b@pacbell•net>
Cc: Wu Fengguang <wfg@linux•intel.com>, netdev@vger•kernel.org
Subject: Re: [PATCH] dm9601: handle corrupt mac address
Date: Tue, 06 Jan 2009 11:56:16 +0100 [thread overview]
Message-ID: <87vdssu2i7.fsf@macbook.be.48ers.dk> (raw)
In-Reply-To: <200901060228.16744.david-b@pacbell.net> (David Brownell's message of "Tue\, 6 Jan 2009 02\:28\:16 -0800")
>>>>> "David" == David Brownell <david-b@pacbell•net> writes:
David> On Tuesday 06 January 2009, Peter Korsgaard wrote:
>> So what happens if you plug in 2 devices without an EEPROM? Do they
>> get the same MAC address? That seems broken.
David> What happens when you unplug one then re-plug it? Maybe
David> someone trips over the USB cable, or it gets an electrical
David> glitch that evalutes to disconnect/reconnect... It gets
David> the same address again. Not particularly broken.
David> Note that Ethernet was *designed* around using a single
David> address per host ... I still have XNS docs sitting around
David> somewhere, that was a fairly significant thing. One of the
David> original reasons Ethernet adapter addresses could change
David> was to make sure that all Ethernet interfaces on a host
David> would use the same address.
David> That said ... if it bothers you, that's easy to change
David> in userspace. This code has worked this way for around
David> nine years now; I don't recall any previous complaints.
Ok, I don't feel particular strongly about it, just found it odd.
--
Bye, Peter Korsgaard
next prev parent reply other threads:[~2009-01-06 10:56 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-06 6:14 [PATCH] dm9601: handle corrupt mac address Wu Fengguang
2009-01-06 8:04 ` Peter Korsgaard
2009-01-06 8:29 ` Wu Fengguang
2009-01-06 8:42 ` Peter Korsgaard
2009-01-06 9:50 ` Wu Fengguang
2009-01-06 10:28 ` David Brownell
2009-01-06 10:56 ` Peter Korsgaard [this message]
2009-01-06 18:55 ` David Miller
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