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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D">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…
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D">Marvelled at the time that the odds of that happening are somewhat astronomical, though perhaps not quite so astronomical as first thought…
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<p class="MsoNormal"><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:#1F497D">--JC</span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt; font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt; font-family:"Tahoma","sans-serif""> ausnog-bounces@lists.ausnog.net [mailto:ausnog-bounces@lists.ausnog.net]
<b>On Behalf Of </b>Lloyd Wood<br>
<b>Sent:</b> Thursday, 7 February 2013 8:24 AM<br>
<b>To:</b> Mark Smith; ausnog@ausnog.net<br>
<b>Subject:</b> Re: [AusNOG] The occurrence of duplicate MAC addresses</span></p>
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<p class="MsoNormal" style="background:white"><span style="color:black">Colleagues have horror stories about debugging running into MAC address conflicts in the field with IPv4.</span></p>
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<p class="MsoNormal"><span style="color:black">"Oh, we weren't expecting you to ship them to a different region!"</span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt; background:white"><span style="color:black">Lloyd Wood<br>
<a href="mailto:lloyd.wood@yahoo.co.uk">lloyd.wood@yahoo.co.uk</a><br>
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<p class="MsoNormal" style="background:white"><b><span style="font-size:10.0pt; font-family:"Arial","sans-serif"; color:black">From:</span></b><span style="font-size:10.0pt; font-family:"Arial","sans-serif"; color:black"> Mark Smith <markzzzsmith@yahoo.com.au><br>
<b>To:</b> "ausnog@ausnog.net" <ausnog@ausnog.net> <br>
<b>Sent:</b> Wednesday, 6 February 2013, 21:29<br>
<b>Subject:</b> [AusNOG] The occurrence of duplicate MAC addresses</span><span style="color:black"></span></p>
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Hi,<br>
<br>
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.<br>
<br>
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.<br>
<br>
<a href="https://www.ietf.org/mail-archive/web/ipv6/current/msg17105.html" target="_blank">https://www.ietf.org/mail-archive/web/ipv6/current/msg17105.html</a><br>
<br>
<br>
<a href="https://www.ietf.org/mail-archive/web/ipv6/current/msg17105.html" target="_blank">https://www.ietf.org/mail-archive/web/ipv6/current/msg17105.html</a><br>
<br>
<br>
Regards,<br>
Mark.<br>
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<a href="http://lists.ausnog.net/mailman/listinfo/ausnog" target="_blank">http://lists.ausnog.net/mailman/listinfo/ausnog</a><br>
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