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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">And now, with the 100.64.0.0/10 being deployed, I wonder how many CPE will believe that have a public IPv4 address and start behaving as a 6to4 relay...<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Beside looking at the CGN logs, I wonder how we could measure those really fake 6to4 addresses (hummm I will modify my fake BitTorrent client to
see how many of those addresses are ‘used’)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">-éric<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></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""> ipv6-ops-bounces+evyncke=cisco.com@lists.cluenet.de [mailto:ipv6-ops-bounces+evyncke=cisco.com@lists.cluenet.de]
<b>On Behalf Of </b>Tim Chown<br>
<b>Sent:</b> vendredi 1 mars 2013 07:03<br>
<b>To:</b> Brzozowski, John Jason<br>
<b>Cc:</b> Ole Troan; IPv6 Ops list; Ignatios Souvatzis<br>
<b>Subject:</b> Re: 6to4 status (again)<o:p></o:p></span></p>
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<p class="MsoNormal">On 1 Mar 2013, at 14:46, "Brzozowski, John Jason" <<a href="mailto:jjmb@jjmb.com">jjmb@jjmb.com</a>> wrote:<o:p></o:p></p>
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<p>Oh btw not everyone will turn their relays off. Someone will try to be a hero. :)<o:p></o:p></p>
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<p class="MsoNormal">In the early days the hero was SWITCH. But I refer you to Batman on the topic of heroes :)<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Anyway, it would be great to get a list of, as Brian puts it, 'legacy' equipment that is doing this, or of specific applications that may be doing so (e.g. maybe P2P on certain platforms). Any intel from John or elsewhere would be really
interesting. <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I know a significant number of Apple Airport Extremes were 'guilty' a few years ago, but updates were made available for that. Whether those were applied automatically or otherwise is another question.<o:p></o:p></p>
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<p class="MsoNormal">Tim<o:p></o:p></p>
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<p class="MsoNormal">On Mar 1, 2013 8:20 AM, "Tim Chown" <<a href="mailto:tjc@ecs.soton.ac.uk">tjc@ecs.soton.ac.uk</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal">On Fri, Mar 1, 2013 at 8:00 AM, Ole Troan <<a href="mailto:ot@cisco.com" target="_blank">ot@cisco.com</a>> wrote:<o:p></o:p></p>
<p class="MsoNormal">John,<o:p></o:p></p>
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> Ole we actually have experience that tells us it would be bad if we turned our relays. Some streaming service experience is already not optimal over 6to4 using our relays largely related to the protocol not the relays themselves. Turning ours down would
result in the use of a single 6to4 relay on someone else's network. Further this relay is hosted by a university. For now we think it makes more sense to keep our running and encourage client side disablement until there is ~0 bits over 6to4.<o:p></o:p></p>
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<p class="MsoNormal">yep, I understand the choice and what bind you're in.<br>
my hope was that everyone, including the university would stop their 6to4 public relays.<o:p></o:p></p>
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<p class="MsoNormal">Well that university should quickly spot the 'DoS' that would suddenly hit it, and also turn the relay service off.<o:p></o:p></p>
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<p class="MsoNormal">The whole turn-off could ripple through the net in a couple of weeks, with luck :)<o:p></o:p></p>
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<p class="MsoNormal">The question really is how many systems are using 6to4 by choice? If it's an issue with address selection where native IPv4 and 6to4 exist, then that should be fixed, else the relays will always be needed. <o:p></o:p></p>
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<p class="MsoNormal">The geeks who want IPv6 can surely use tunnel brokers.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Tim<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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