[tor-bugs] #20074 [Core Tor/Tor]: Stop changing UseEntryGuards in authority and Tor2web configs

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#20074: Stop changing UseEntryGuards in authority and Tor2web configs
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     Reporter:  teor     |      Owner:
         Type:  defect   |     Status:  new
     Priority:  Medium   |  Milestone:  Tor: 0.2.???
    Component:  Core     |    Version:  Tor: 0.2.4.3-alpha
  Tor/Tor                |   Keywords:  tor-auth, tor2web,
     Severity:  Normal   |  TorCoreTeam201609, 029-proposed
Actual Points:  0.1      |  Parent ID:  #17178
       Points:  0.1      |   Reviewer:
      Sponsor:           |
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 Instead, change a copy of the option's value.
 Introduced in commits 51fc6799 in tor-0.1.1.16-rc and acda1735 in
 tor-0.2.4.3-alpha.

 Also, check the consistency of UseEntryGuards and EntryNodes after we
 change UseEntryGuards.
 Introduced in commit 686aaa5c in tor-0.2.4.12-alpha.

 Part of #17178.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/20074>
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