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<div class="moz-cite-prefix">On 15.08.2019 00:50, teor wrote:<br>
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<blockquote type="cite"
cite="mid:850F7D16-A937-4747-9D27-905850C9034F@riseup.net">
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<div><span style="background-color: rgba(255, 255, 255, 0);">Hi,</span></div>
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On 14 Aug 2019, at 03:42, NOC <<a
href="mailto:tor@afo-tm.org" moz-do-not-send="true">tor@afo-tm.org</a>>
wrote:<br>
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<div class="moz-cite-prefix">On 12.08.2019 23:39, teor wrote:</div>
<blockquote type="cite"
cite="mid:06830E45-8E86-476C-A08B-262FD54DEAA4@riseup.net">
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On 13 Aug 2019, at 05:08, Roman Mamedov <<a
href="mailto:rm@romanrm.net" moz-do-not-send="true">rm@romanrm.net</a>>
wrote:<br>
<br>
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<blockquote type="cite">
<div dir="ltr"><span>On Mon, 12 Aug 2019 00:46:50 +0000</span><br>
<span>Christopher Sheats <<a
href="mailto:yawnbox@emeraldonion.org"
moz-do-not-send="true">yawnbox@emeraldonion.org</a>>
wrote:</span><br>
<span></span><br>
<blockquote type="cite"><span>Tor Project, please
increase your #IPv6 awareness/outreach similar to
how</span><br>
</blockquote>
<blockquote type="cite"><span>ARIN and the other RIRs
try very hard to do.</span><br>
</blockquote>
<span></span><br>
<span>Before outreach Tor would need some actual IPv6
support, as in using it for</span><br>
<span>the actual traffic of relay-to-relay
communication. I tried running a few</span><br>
<span>relays with very fast IPv6 and slow IPv4 (due to a
common NAT frontend which</span><br>
<span>was the bottleneck), but it was a complete
nonstarter.</span></div>
</blockquote>
<div><br>
</div>
<div>Tor relays currently don't connect over IPv6. When 10%
of the network</div>
<div>supported IPv6, there wasn't much point, because
putting a very small</div>
<div>number of paths over IPv6 has privacy risks. So we
focused on client, guard,</div>
<div>and exit IPv6 support.</div>
<div><br>
</div>
<div>But <span style="background-color: rgba(255, 255, 255,
0);">currently, about 30% </span><span
style="background-color: rgba(255, 255, 255, 0);">of the
consensus </span><span style="background-color:
rgba(255, 255, 255, 0);">weight supports IPv6. So we</span></div>
<div><span style="background-color: rgba(255, 255, 255, 0);">are
working on a grant for IPv6 support (see below).</span></div>
<div><br>
</div>
<div>We won't be able to prefer IPv6 until 50-67% of relays
support IPv6, for</div>
<div>load-balancing and privacy reasons. But we plan on
using the</div>
<div>"Happy Eyeballs" (RFC 8305) algorithm on dual-stack
relays. So</div>
<div>sufficiently slow IPv4 will cause relays to connect
over IPv6. (And we can</div>
<div>tune the load-balancing using the IPv4 to IPv6 delay.)</div>
</blockquote>
<p>I still would say that these stats are deeply flawed.
Looking at the Autonomous Systems where the relays are
located from the top100, 99 of them do support IPv6
(85,7625% consensus weight), the only one which doesn't
support is AS4224 but since they manage their AS themselves
they would only need to ask their LIR and would get IPv6.</p>
</div>
</blockquote>
<div>The top 100 relays are only 13-18% of the total advertised
bandwidth:</div>
<div><a
href="https://metrics.torproject.org/advbwdist-relay.html?start=2019-05-16&end=2019-08-14&n=1&n=100"
moz-do-not-send="true">https://metrics.torproject.org/advbwdist-relay.html?start=2019-05-16&end=2019-08-14&n=1&n=100</a></div>
<div><a href="https://metrics.torproject.org/bandwidth.html"
moz-do-not-send="true">https://metrics.torproject.org/bandwidth.html</a></div>
</blockquote>
<p>I never wrote about the top100 relays, relays don't matter, they
come and go. It is important who does host them, that is why i
looked at the AS, because the providers won't stop offer IPv6 if
they have deployed it once. And that is why i think the complete
roadmap is not useful at all and will delay everything just
unnecessary.<br>
</p>
<blockquote type="cite"
cite="mid:850F7D16-A937-4747-9D27-905850C9034F@riseup.net">
</blockquote>
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