[124728] in North American Network Operators' Group
Re: what about 48 bits?
daemon@ATHENA.MIT.EDU (Mikael Abrahamsson)
Sun Apr 4 11:42:03 2010
Date: Sun, 4 Apr 2010 17:41:34 +0200 (CEST)
From: Mikael Abrahamsson <swmike@swm.pp.se>
To: jim deleskie <deleskie@gmail.com>
In-Reply-To: <w2yffcec29f1004040757u586a44e4ue16fedab5aafe8d2@mail.gmail.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Sun, 4 Apr 2010, jim deleskie wrote:
> I've seen duplicate addresses in the wild in the past, I assume there
> is some amount of reuse, even though they are suppose to be unique.
5 percent of the mac addresses in a ADSL population used the same MAC
address. Turned out to be some D-link device that didn't have unique
address but they all had the same, and had a feature where you could
"clone" the internal PC MAC address if you wanted to, otherwise it used
some default address.
D-link support responded to customer inquiries with "yes, we know that
they're not unique enough". Nuff said, avoid.
--
Mikael Abrahamsson email: swmike@swm.pp.se
