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</o:shapelayout></xml><![endif]--></head><body lang=ES link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span lang=EN-US style='font-size:12.0pt;mso-fareast-language:EN-US'>That’s wrong, even if some folks do.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:12.0pt;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:12.0pt;mso-fareast-language:EN-US'>If you filter 2002::/16, peer to peer that still uses 6to4 get broken -> more calls to the help desk.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:12.0pt;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:12.0pt;mso-fareast-language:EN-US'>The only that IETF did is to deprecate 6to4 anycast (RFC7526), so only the IPv4 anycast prefix is not anymore working. Maybe the right thing to filter is then 192.88.99.1.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:12.0pt;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:12.0pt;mso-fareast-language:EN-US'>This is the relevant text:<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><a name=section-4></a><a href="https://tools.ietf.org/html/rfc7526#section-4"><span style='mso-bookmark:section-4'><b><span style='font-size:10.0pt;font-family:"Courier New";color:black'>4</span></b></span><span style='mso-bookmark:section-4'></span></a><span style='mso-bookmark:section-4'></span><b><span style='font-size:10.0pt;font-family:"Courier New";color:black'>. Deprecation<o:p></o:p></span></b></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'> This document formally deprecates the anycast 6to4 transition<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'> mechanism defined in [<a href="https://tools.ietf.org/html/rfc3068" title=""An Anycast Prefix for 6to4 Relay Routers"">RFC3068</a>] and the associated anycast IPv4<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'> address 192.88.99.1. It is no longer considered to be a useful<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'> service of last resort.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'> The prefix 192.88.99.0/24 MUST NOT be reassigned for other use except<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'> by a future IETF Standards Action.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'> The basic unicast 6to4 mechanism defined in [<a href="https://tools.ietf.org/html/rfc3056" title=""Connection of IPv6 Domains via IPv4 Clouds"">RFC3056</a>] and the<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'> associated 6to4 IPv6 prefix 2002::/16 are not deprecated. The<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'> default address selection rules specified in [<a href="https://tools.ietf.org/html/rfc6724" title=""Default Address Selection for Internet Protocol Version 6 (IPv6)"">RFC6724</a>] are not<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'> modified.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'> In the absence of 6to4 anycast, "6to4 Provider Managed Tunnels"<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'> [<a href="https://tools.ietf.org/html/rfc6732" title=""6to4 Provider Managed Tunnels"">RFC6732</a>] will no longer be necessary, so they are also deprecated by<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black'> this document.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:12.0pt;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:12.0pt;mso-fareast-language:EN-US'><o:p> </o:p></span></p><div><p class=MsoNormal><span lang=EN-US style='font-size:12.0pt;color:black'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:12.0pt;color:black'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:12.0pt;color:black'>Regards,<o:p></o:p></span></p><p class=MsoNormal style='margin-bottom:12.0pt'><span lang=EN-US style='font-size:12.0pt;color:black;mso-fareast-language:EN-US'>Jordi<o:p></o:p></span></p><p class=MsoNormal style='margin-bottom:12.0pt'><span lang=EN-US style='font-size:12.0pt;color:black;mso-fareast-language:EN-US'>@jordipalet<o:p></o:p></span></p><p class=MsoNormal style='margin-bottom:12.0pt'><span lang=EN-US style='font-size:12.0pt;color:black;mso-fareast-language:EN-US'><o:p> </o:p></span></p></div><p class=MsoNormal><span lang=EN-US style='font-size:12.0pt;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:12.0pt;mso-fareast-language:EN-US'><o:p> </o:p></span></p><div><div><p class=MsoNormal style='margin-left:35.4pt'>El 6/2/20 11:47, "AusNOG en nombre de Noel Butler" <<a href="mailto:ausnog-bounces@lists.ausnog.net">ausnog-bounces@lists.ausnog.net</a> en nombre de <a href="mailto:noel.butler@ausics.net">noel.butler@ausics.net</a>> escribió:<o:p></o:p></p></div></div><div><p class=MsoNormal style='margin-left:35.4pt'><o:p> </o:p></p></div><p style='margin-left:35.4pt'>I hope you have a lot of peering points in USA, with Cogent's long time refusal to peer with HE causing a lot of dead-end paths :)<o:p></o:p></p><p style='margin-left:35.4pt'>and that 2002::/16 is blocked by a lot of networks for waaaayyy too much abuse in the past.<o:p></o:p></p><p style='margin-left:35.4pt'>Has it been cleaned up?<o:p></o:p></p><p style='margin-left:35.4pt'>On 06/02/2020 14:27, Russell Langton wrote:<o:p></o:p></p><blockquote style='border:none;border-left:solid #1010FF 1.5pt;padding:0cm 0cm 0cm 5.0pt;margin-left:0cm;margin-right:0cm'><div><div><div><p class=MsoNormal style='margin-left:35.4pt'><br> *<br>- If your website/content/other is advertising a AAAA Ipv6 DNS record, <br> => This may cause problems if your website is not 100% Ipv6<o:p></o:p></p></div></div></div></blockquote><div><p class=MsoNormal style='margin-left:35.4pt'> <o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:35.4pt'> <o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:35.4pt'>-- <o:p></o:p></p><p style='margin-left:35.4pt'>Kind Regards,<o:p></o:p></p><p style='margin-left:35.4pt'>Noel Butler<o:p></o:p></p><table class=MsoNormalTable border=1 cellspacing=0 cellpadding=0 width=748 style='width:561.0pt;margin-left:35.4pt'><tr><td style='padding:3.75pt 3.75pt 3.75pt 3.75pt'><p class=MsoNormal><span style='font-size:7.5pt'>T</span><span style='font-size:7.5pt;font-family:"Courier New"'>his Email, including attachments, may contain legally privileged information, therefore remains confidential and subject to copyright protected under international law. 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