[tor-bugs] #18114 [Tor]: Warn when ReachableAddresses restricts connections to relays chosen by others

[Tor Bug Tracker & Wiki]

#18114: Warn when ReachableAddresses restricts connections to relays chosen by
others
------------------------+--------------------------------
     Reporter:  teor    |      Owner:
         Type:  defect  |     Status:  new
     Priority:  Medium  |  Milestone:  Tor: 0.2.8.x-final
    Component:  Tor     |    Version:
     Severity:  Normal  |   Keywords:  rsos tor2web
Actual Points:          |  Parent ID:  #17178
       Points:          |    Sponsor:
------------------------+--------------------------------
 Tor clients which use one-hop paths to access relays chosen by other
 clients can't use ReachableAddresses (or similar options) or ClientUseIPv4
 0 (#17840). If they did, this would deny them access to some relays,
 potentially impairing functionality or performance.

 This affects the following Tor modes:
 * Tor2Web - Introduction Points
 * RSOS - Rendezvous Points

 For directory, guard, and bridge connections, clients choose or are
 configured with accessible relays based on ReachableAddresses /
 ClientUseIPv4/ClientUseIPv6.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/18114>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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