<html><head></head><body style="zoom: 0%;"><div dir="auto">Hola estimados. Les avisamos. Que los mails que. Envìan llegan con. Errores de tipeo. Estimades, Amiguis. <br></div>
<div dir="auto">les. avisames. Porque. No sé entiende<br></div>
<div dir="auto">Saludes <br><br></div>
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<div dir="auto"><font size ="2"><!-- tmjah_g_1299s -->Sebastián Bergagna<!-- tmjah_g_1299e --></font><font size ="2"><!-- tmjah_g_1299s --> <!-- tmjah_g_1299e --></font><br></div>
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<div class="gmail_quote" >En 31 de ago. de 2022, en 07:47, Fernando Gont <<a href="mailto:fgont@si6networks.com" target="_blank">fgont@si6networks.com</a>> escribió:<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<pre class="blue">Estimades,<br><br>Nos queda esta ultima pieza (del rompecabezas) para evitar que Uds., yo, <br>sus usuarios, y todos nuestros amiguis, decidan deshbilitar IPv6 ante la <br>recurrencia de los prolemas relacionados con la rotacion de prefios de <br>SLAAC.<br><br>En tal sentido, tengo algo que compatirles:<br><br><br>Folks,<br><br>We have been discussing the potential problems associated with SLAAC <br>renumbering events for a while now -- one of the most common cases being <br>ISPs rotating home prefixes, and your devices ending up with <br>stale/invalid addresses.<br><br>We have done quite a bit of work already:<br><br> * Problem statement: <a href="https://datatracker.ietf.org/doc/html/rfc8978">https://datatracker.ietf.org/doc/html/rfc8978</a><br> * CPE recommendations: <a href="https://datatracker.ietf.org/doc/html/rfc9096">https://datatracker.ietf.org/doc/html/rfc9096</a><br><br>But there's still some work to do to address this issue: The last <br>remaining it is to improve SLAAC such that hosts can more gracefully <br>deal with this renumbering events.<br><br>In that light, IETF's 6man has been working on this document: <br><a href="https://www.ietf.org/archive/id/draft-ietf-6man-slaac-renum-04.txt">https://www.ietf.org/archive/id/draft-ietf-6man-slaac-renum-04.txt</a><br><br>And we have proposed a simple algorithm for SLAAC (an extension, if you <br>wish) that can easily help, as follows:<br><br> If you (host) receive an RA that contains options, but not all<br> of the previously-received options/information, simply send a<br> unicast RS to the local-router, to verify/refresh that such missing<br> information is still valid. If the information is stale, get rid of<br> it.<br><br>I presented this algorithm at the last IETF meeting <br>(<a href="https://youtu.be/eKEizC8xhhM?t=1308">https://youtu.be/eKEizC8xhhM?t=1308</a>).<br><br>(You may find the slides here: <br><a href="https://datatracker.ietf.org/meeting/114/materials/slides-114-6man-improving-the-robustness-of-stateless-address-autoconfiguration-slaac-to-flash-renumbering-events-00">https://datatracker.ietf.org/meeting/114/materials/slides-114-6man-improving-the-robustness-of-stateless-address-autoconfiguration-slaac-to-flash-renumbering-events-00</a>)<br><br>Finally, I've sent draft text for the specification of the algorithm <br>here: <br><a href="https://mailarchive.ietf.org/arch/msg/ipv6/KD_Vpqg0NmkVXOQntVTOMlWHWwA">https://mailarchive.ietf.org/arch/msg/ipv6/KD_Vpqg0NmkVXOQntVTOMlWHWwA</a>/<br><br>We would be super thankful if you could take a look at the draft text <br>(i.e., <br><a href="https://mailarchive.ietf.org/arch/msg/ipv6/KD_Vpqg0NmkVXOQntVTOMlWHWwA">https://mailarchive.ietf.org/arch/msg/ipv6/KD_Vpqg0NmkVXOQntVTOMlWHWwA</a>/) <br>and provide feedback/comments.<br><br>If you can post/comment on the 6man wg mailing list <br>(<a href="https://www.ietf.org/mailman/listinfo/ipv6">https://www.ietf.org/mailman/listinfo/ipv6</a>), that´d be fabulous.<br>But we'll appreciate your feedback off-list, on this list, etc. (that'd <br>still be great ;-) )<br><br>Thanks in advance!<br><br>Regards,</pre></blockquote></div></body></html>