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<div id="imail_extraContent">你说什么？</div>

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<div class="J-reply" style="background-color:#f2f2f2;color:black;padding-top:6px;padding-bottom:6px;border-radius:3px;-moz-border-radius:3px;-webkit-border-radius:3px;margin-top:45px;margin-bottom:20px;"><div style="font-size:14px;line-height:1.5;word-break:break-all;margin-left:10px;margin-right:10px">On <span class="mail-date">01/24/2019 21:22</span>, <a class="mail-to" style="text-decoration:none;color:#2a97ff;" href="mailto:ignatios@cs.uni-bonn.de">ignatios</a> wrote: </div></div><blockquote id="ntes-iosmail-quote" style="margin:0">Hi,

<br>

<br>we've got reports that 

<br>

<br>- repo.anaconda.com (104.17.N.77, 2606:4700::ip.v4.adr.ess)

<br>

<br>(and later:

<br>- www.zabbix.com (104.24.10[23].152, 2606:4700:30::6818:6[6]98)

<br>- www.thunderbird.net (104.25.17[45].13, 2606:4700:20::6819:a[ef]0d)

<br>

<br>"don't work but work when IPv6 is switched off"

<br>

<br>Careful scrutinizing revealed that this was only the case for one

<br>or two of the used address group.

<br>

<br>Detailed symptom: TCP opens, but the first data segment written

<br>gets a RST back.

<br>

<br>I first reported to anaconda.com, but it seems to be a generic

<br>problem to me now (who else is seeing this?)

<br>

<br>So, if any colleague @ cloudflare (AS13335) reads this: 

<br>please make work again.

<br>

<br>    -is

<br>-- 

<br>Ignatios Souvatzis, Chief IPv6 enabler        RFC 6540

<br>Gemeinsame Systemgruppe b-it + Informatik    Tel. +49 228 73-60701

<br>gsg@cs.uni-bonn.de

<br></blockquote>

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