<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div><span>Colleagues have horror stories about debugging running into MAC address conflicts in the field with IPv4.</span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: 'times new roman', 'new york', times, serif; background-color: transparent; font-style: normal;"><span><br></span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: 'times new roman', 'new york', times, serif; background-color: transparent; font-style: normal;"><span>"Oh, we weren't expecting you to ship them to a different region!"</span></div><div></div><div> </div><div>Lloyd Wood<br>lloyd.wood@yahoo.co.uk<br><br><br></div> <div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt;"> <div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt;"> <div dir="ltr">
<font size="2" face="Arial"> <hr size="1"> <b><span style="font-weight:bold;">From:</span></b> Mark Smith <markzzzsmith@yahoo.com.au><br> <b><span style="font-weight: bold;">To:</span></b> "ausnog@ausnog.net" <ausnog@ausnog.net> <br> <b><span style="font-weight: bold;">Sent:</span></b> Wednesday, 6 February 2013, 21:29<br> <b><span style="font-weight: bold;">Subject:</span></b> [AusNOG] The occurrence of duplicate MAC addresses<br> </font> </div> <br>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>_______________________________________________<br>AusNOG mailing list<br><a ymailto="mailto:AusNOG@lists.ausnog.net" href="mailto:AusNOG@lists.ausnog.net">AusNOG@lists.ausnog.net</a><br><a href="http://lists.ausnog.net/mailman/listinfo/ausnog" target="_blank">http://lists.ausnog.net/mailman/listinfo/ausnog</a><br><br><br> </div> </div> </div></body></html>