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

[Tor Bug Tracker & Wiki]

#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 nusenu):

 Replying to [comment:7 teor]:
 > nusenu, you're also using some different calculations from the grant:
 > * you're calculating Guard IPv6 consensus weight fraction

 I don't know about the grant but I can explain what my value says, it is
 not what you think it is.

 I'm not looking at cw fraction to calculate the "Guard: 29.06%" line
 above.

 I take and sum up onionoo's guard_probability [1] value of relays that
 have an IPv6 OrPort.
 The guard_probability of relays having the exit flag is always 0, with one
 exception:
 If the relay has the Exit and BadExit flags, in this specific but rare
 case the exit
 relay can have a non-zero guard probability.

 > * the grant uses Guard-but-not-Exit IPv6 consensus weight fraction

 If the grant is about supporting Tor clients only (which I hope it is not
 since I thought client-to-guard supports IPv6 already) than it seems odd
 to use cw fraction instead of "what fraction of guard capacity is
 reachable via IPv6?" metrics.


 [1]
 https://metrics.torproject.org/onionoo.html#details_relay_guard_probability

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/33045#comment:8>
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