[tor-bugs] #21311 [Core Tor/Tor]: launch_resolve() should always resolve AAAA records, regardless of IPv6Exit

Tor Bug Tracker & Wiki blackhole at torproject.org
Wed Jan 25 00:57:42 UTC 2017


#21311: launch_resolve() should always resolve AAAA records, regardless of IPv6Exit
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 Reporter:  teor          |          Owner:
     Type:  defect        |         Status:  new
 Priority:  Medium        |      Milestone:  Tor: unspecified
Component:  Core Tor/Tor  |        Version:
 Severity:  Normal        |     Resolution:
 Keywords:  ipv6          |  Actual Points:
Parent ID:                |         Points:  1
 Reviewer:                |        Sponsor:
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Comment (by arma):

 I think we shouldn't worry about whether exits meant to allow v6 lookups
 -- if you're an exit relay and you're willing to do v4 resolves, then I
 think it's a legit assumption that you're willing to do v6 resolves too.

 One question that makes me pause though: are there dns resolvers out there
 that quietly drop AAAA resolve requests, which would cause surprising
 timeouts on exits while they wait for both resolve responses?

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/21311#comment:3>
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