[tor-bugs] #18580 [Tor]: exit relay fails with 'unbound' DNS resolver when lots of requests time-out

Sun Apr 10 05:21:34 UTC 2016

#18580: exit relay fails with 'unbound' DNS resolver when lots of requests time-out
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 Reporter:  Dhalgren  |          Owner:
     Type:  defect    |         Status:  new
 Priority:  Medium    |      Milestone:
Component:  Tor       |        Version:  Tor: 0.2.7.6
 Severity:  Major     |     Resolution:
 Keywords:            |  Actual Points:
Parent ID:            |         Points:
 Reviewer:            |        Sponsor:  None
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Comment (by Dhalgren):

 After some thought I realized that the dramatically different timeout
 behavior of `Unbound` relative to `named` might be an issue in other use
 cases.  Posted to the unbound-users list about it and they responded with
 an insightful analysis.  It seems possible that an Unbound compatibility
 feature / option might be created for applications that, like Tor, employ
 the eventdns component of libevent.

 https://unbound.net/pipermail/unbound-users/2016-April/004297.html

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/18580#comment:11>
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