[tor-bugs] #33045 [Core Tor/Tor]: Increase the number of Tor network relays that support IPv6

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#33045: Increase the number of Tor network relays that support IPv6
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 Reporter:  gaba          |          Owner:  (none)
     Type:  project       |         Status:  new
 Priority:  Medium        |      Milestone:
Component:  Core Tor/Tor  |        Version:
 Severity:  Normal        |     Resolution:
 Keywords:                |  Actual Points:
Parent ID:                |         Points:
 Reviewer:                |        Sponsor:  Sponsor55-must
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Comment (by teor):

 Replying to [comment:5 gaba]:
 > Replying to [comment:3 nusenu]:
 > > > By the numbers, about 29% of Tor’s relay bandwidth supports IPv6--
 but functionally, only 20% of Tor’s available bandwidth supports IPv6.
 > >
 > > These numbers seem outdated.
 > >
 > > onionoo data from 2020-01-24 23:00 UTC:
 > >
 > > What cw fraction / guard/middle/exit probability has an IPv6 ORPort?
 > > CW Fraction: 31.83%
 > > Guard: 29.06%
 > > Middle:  29.79%
 > > Exit: 39.24%
 > > Relays count:  1210
 > >
 > > daily updated onionoo based IPv6 stats:
 https://nusenu.github.io/OrNetStats/#ipv6-relay-stats
 > >
 > > IPv6 related metrics graph:
 > > https://metrics.torproject.org/relays-ipv6.html
 >
 > Thanks! Those numbers were from when we wrote the project last year.

 nusenu, you're also using some different calculations from the grant:
 * you're calculating Guard IPv6 consensus weight fraction
 * the grant uses Guard-but-not-Exit IPv6 consensus weight fraction

 Since exit bandwidth is scarce in the tor network, tor clients use Guard-
 Exits as Exits. Therefore, to support IPv6 clients, we need to increase
 Guard-but-not-Exit IPv6 consensus weight.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/33045#comment:7>
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