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

[Tor Bug Tracker & Wiki]

#25870: Fix vanguard restrictions
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     Reporter:  mikeperry     |      Owner:  (none)
         Type:  defect        |     Status:  new
     Priority:  Medium        |  Milestone:
    Component:  Core Tor/Tor  |    Version:
     Severity:  Normal        |   Keywords:
Actual Points:                |  Parent ID:  #25546
       Points:                |   Reviewer:
      Sponsor:                |
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 asn pointed out that Tor relays forbid and will warn if clients create
 paths of the form A - B - A or A - A - A. The vangaurd path restrictions
 currently will do this, though.

 Additionally, they apply exit restrictions while choosing a guard, which I
 think we should disable. Since vanguard paths are all at least 3 hops
 before a chosen exit, this is a simple change.

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