[tor-bugs] #21346 [Core Tor/Tor]: Clients with NoIPv4Traffic should only choose IPv6-supporting Exits

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#21346: Clients with NoIPv4Traffic should only choose IPv6-supporting Exits
-------------------------------------------------+-------------------------
 Reporter:  teor                                 |          Owner:  neel
     Type:  defect                               |         Status:
                                                 |  needs_revision
 Priority:  Medium                               |      Milestone:  Tor:
                                                 |  0.3.5.x-final
Component:  Core Tor/Tor                         |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  ipv6, 031-deferred-20170425,         |  Actual Points:
  032-unreached                                  |
Parent ID:  #21311                               |         Points:  0.5
 Reviewer:  dgoulet                              |        Sponsor:
-------------------------------------------------+-------------------------

Comment (by neel):

 The new patch's PR is here: https://github.com/torproject/tor/pull/140

 Travis and Coveralls passes. AppVeyor passes for 32 bit Windows, and fails
 for 64-bit, but the failure happens on `FAIL:
 src/test/test_key_expiration.sh` and I believe this `FAIL` line is not
 related to my code.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/21346#comment:24>
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