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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal>I know of a few people in a Discord that filter out anything bigger than /16 routes, would this be wise to implement as a best practice?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b>From:</b> Warren Kumari <warren@kumari.net> <br><b>Sent:</b> Friday, December 9, 2022 9:13 AM<br><b>To:</b> Job Snijders <job@fastly.com><br><b>Cc:</b> ryan@rkhtech.org; North American Network Operators' Group <nanog@nanog.org><br><b>Subject:</b> Re: AS3356 Announcing 2000::/12<o:p></o:p></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><div><p class=MsoNormal><o:p> </o:p></p></div><div><div><p class=MsoNormal><o:p> </o:p></p></div></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><div><div><p class=MsoNormal><o:p> </o:p></p></div><div><div><p class=MsoNormal><span class=sh-date>On Thu, Dec 8</span> 2022 at 12:38 PM, Job Snijders <<a href="mailto:nanog@nanog.org">nanog@nanog.org</a>> wrote: <o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:0in;margin-right:0in;margin-bottom:4.8pt'><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Hi all,<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>On Wed, Dec 07, 2022 at 08:24:54PM -0800, Ryan Hamel wrote:<o:p></o:p></p><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>AS3356 has been announcing 2000::/12 for about 3 hours now, an aggregate covering over 23K prefixes (just over 25%) of the IPv6 DFZ.<o:p></o:p></p></blockquote><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>A few months ago I wrote: "Frequently Asked Questions about 2000::/12 and related routing errors":<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><a href="https://www.ripe.net/ripe/mail/archives/routing-wg/2022-July/004588.html" target="_blank">https://www.ripe.net/ripe/mail/archives/routing-wg/2022-July/004588.html</a><o:p></o:p></p></div></div></blockquote></div></div></div><div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Oh, that's a nice write-up. I must admit that it didn't occur to me that e.g 2000::/12 was likely something much more specific, but that someone missed the (probably) 6, 7, or 8 at the end, even though I've done this a few times myself…<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>W<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:0in;margin-right:0in;margin-bottom:4.8pt'><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><o:p> </o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Kind regards,<o:p></o:p></p><p class=sh-signature>Job<o:p></o:p></p></div></div></blockquote></div></div><div><p class=MsoNormal><o:p> </o:p></p></div></div></div></div></div></body></html>