[tor-bugs] #13839 [Tor]: Exit Policy says accept *:* but relay doesn't have Exit flag

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#13839: Exit Policy says accept *:* but relay doesn't have Exit flag
------------------------+--------------------------------
     Reporter:  teor    |      Owner:  teor
         Type:  defect  |     Status:  assigned
     Priority:  normal  |  Milestone:
    Component:  Tor     |    Version:  Tor: 0.2.6.1-alpha
   Resolution:          |   Keywords:  tor-auth tor-relay
Actual Points:          |  Parent ID:  #13718
       Points:          |
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Changes (by teor):

 * keywords:  tor-auth lorax => tor-auth tor-relay


Comment:

 I think this issue occurs because
 `dirserv_compute_performance_thresholds()` assigns exit flags after
 filtering by `router_counts_toward_thresholds()`. This appears to be a
 feature intended to avoid pollution of the Tor network by low-quality Exit
 nodes.

 The fix is to use an option that's already in the code. I think
 `TestingMinExitFlagThreshold 0` should ensure the exit flag is assigned to
 all potential exit relays, after they self-test reachability and post
 their descriptors to the authorities.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/13839#comment:5>
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