nanog mailing list archives
Re: what about 48 bits?
From: Mikael Abrahamsson <swmike () swm pp se>
Date: Sun, 4 Apr 2010 17:41:34 +0200 (CEST)
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
Current thread:
- Re: what about 48 bits?, (continued)
- Re: what about 48 bits? jim deleskie (Apr 04)
- Re: what about 48 bits? David Andersen (Apr 04)
- Re: what about 48 bits? John Peach (Apr 04)
- Re: what about 48 bits? William Herrin (Apr 04)
- Re: what about 48 bits? Jonathan Lassoff (Apr 04)
- Re: what about 48 bits? Steven Bellovin (Apr 04)
- Re: what about 48 bits? Jim Burwell (Apr 04)
- Re: what about 48 bits? John Peach (Apr 04)
- Re: what about 48 bits? David Andersen (Apr 04)
- Re: what about 48 bits? Mark Andrews (Apr 04)
- Re: what about 48 bits? Mark Smith (Apr 04)
- Re: what about 48 bits? jim deleskie (Apr 04)
- Re: what about 48 bits? Matthew Kaufman (Apr 04)
- Re: what about 48 bits? Scott Howard (Apr 04)
- Re: what about 48 bits? Mark Smith (Apr 04)
- Re: what about 48 bits? Richard A Steenbergen (Apr 04)
- Re: what about 48 bits? joel jaeggli (Apr 04)
- Re: what about 48 bits? Bill Bogstad (Apr 05)
- Re: what about 48 bits? Jay Nakamura (Apr 05)
- Re: what about 48 bits? Steven Bellovin (Apr 05)
- Re: what about 48 bits? Jay Nakamura (Apr 05)