[tor-bugs] #25870 [Core Tor/Tor]: Fix vanguard restrictions

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#25870: Fix vanguard restrictions
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 Reporter:  mikeperry     |          Owner:  (none)
     Type:  defect        |         Status:  needs_review
 Priority:  Medium        |      Milestone:  Tor: 0.3.4.x-final
Component:  Core Tor/Tor  |        Version:
 Severity:  Normal        |     Resolution:
 Keywords:                |  Actual Points:
Parent ID:  #25546        |         Points:
 Reviewer:  asn           |        Sponsor:
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Comment (by mikeperry):

 This post provides some more justification:
 https://lists.torproject.org/pipermail/tor-dev/2018-April/013098.html

 This ticket is the first steps towards the proposal at the bottom of that
 post, which I think covers all of the properties we want.

 I would like to figure out how to get a strong version of property #6 in
 the short term too, though. Right now, with S - G - L2 - L3 - M - RP, the
 RP gets to learn the guard if we're using one primary guard (because we
 haven't set the consensus param, or because we have set it but one of the
 guards is temporarily down). We could add a hack to let that M also be
 G...

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25870#comment:8>
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