[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:
Component:  Core Tor/Tor  |        Version:
 Severity:  Normal        |     Resolution:
 Keywords:                |  Actual Points:
Parent ID:  #25546        |         Points:
 Reviewer:                |        Sponsor:
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Changes (by mikeperry):

 * status:  new => needs_review


Comment:

 Ok. https://oniongit.eu/mikeperry/tor/commits/bug25870 prevents A - B - A
 paths and also allows the last hop to be the same as the first.

 It still leaves node family and /16 restrictions disabled, which is what
 we want until we sort out how we want to alter path creation and vanguard
 selection to make all of that consistent.

 I think this should eventually be backported to 0.3.3, since the vanguard
 script with 0.3.3 could cause warns to be generated at relays if it ever
 tries to build an A - B - A path (or an A - A path).

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25870#comment:1>
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