[AusNOG] The occurrence of duplicate MAC addresses

[Josh Carter]

I've personally diagnosed an issue with 2 store bought PC's of the same brand bought on the same day which had identical MAC addresses...

Marvelled at the time that the odds of that happening are somewhat astronomical, though perhaps not quite so astronomical as first thought...

--JC

From: ausnog-bounces at lists.ausnog.net [mailto:ausnog-bounces at lists.ausnog.net] On Behalf Of Lloyd Wood
Sent: Thursday, 7 February 2013 8:24 AM
To: Mark Smith; ausnog at ausnog.net
Subject: Re: [AusNOG] The occurrence of duplicate MAC addresses

Colleagues have horror stories about debugging running into MAC address conflicts in the field with IPv4.

"Oh, we weren't expecting you to ship them to a different region!"

Lloyd Wood
lloyd.wood at yahoo.co.uk<mailto:lloyd.wood at yahoo.co.uk>

________________________________
From: Mark Smith <markzzzsmith at yahoo.com.au>
To: "ausnog at ausnog.net" <ausnog at ausnog.net>
Sent: Wednesday, 6 February 2013, 21:29
Subject: [AusNOG] The occurrence of duplicate MAC addresses

Hi,

There's been a discussion over the last few days on the IETF IPv6 6man (IPv6 maintenance) mailing list regarding the use of MAC addresses to generate IPv6 Interface Identifiers. One of the issues relates to how unique MAC addresses are.

Following on from "The Wild West" presentation I posted the other day, I emailed HD Moore to see if I could get some numbers regarding numbers of occurrences of duplication of individual MAC addresses. HD got back to me today, I've posted them at the following mailing list archive URLs. Make sure you're sitting down.

https://www.ietf.org/mail-archive/web/ipv6/current/msg17105.html


https://www.ietf.org/mail-archive/web/ipv6/current/msg17105.html


Regards,
Mark.
_______________________________________________
AusNOG mailing list
AusNOG at lists.ausnog.net<mailto:AusNOG at lists.ausnog.net>
http://lists.ausnog.net/mailman/listinfo/ausnog

==== Charter Hall ========================
This e-mail message and any accompanying attachments may contain information that is confidential and subject to legal privilege.  If you are not the intended recipient, do not read, use, disseminate, distribute or copy this message or attachments.  If you have received this message in error, please advise Charter Hall by return e-mail or telephone (02) 8908 4000.  Any views expressed in this message are those of the individual sender, except where the sender expressly and with authority states them to be the views of Charter Hall.  Charter Hall cannot guarantee that this e-mail or any attachments are free of viruses or other conditions which may damage or interfere with data, hardware or software with which it might be used.
======================================
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.ausnog.net/pipermail/ausnog/attachments/20130206/8f905c17/attachment.html>