[tor-bugs] #8596 [Tor]: Inconsistent addrmap events when resolving hostname (regression)

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#8596: Inconsistent addrmap events when resolving hostname (regression)
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 Reporter:  Desoxy                     |          Owner:                     
     Type:  defect                     |         Status:  new                
 Priority:  normal                     |      Milestone:  Tor: 0.2.4.x-final 
Component:  Tor                        |        Version:  Tor: 0.2.4.11-alpha
 Keywords:  tor-client controller dns  |         Parent:                     
   Points:                             |   Actualpoints:                     
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Comment(by Desoxy):

 I like the idea of using a flag or setting the expiry time in the past. It
 really depends on the meaning of the expiry time: Does it mean "The remote
 DNS server specified this TTL for this A/AAAA/PTR record" or does it mean
 "Tor will cache this record until that time"? For the first, a flag would
 be better, for the latter I think that setting the expiry time to the
 first of January 1970 would be best. Since the cache is now per circuit,
 it would also be possible to add an CIRC_ID field that indicates for which
 circuit the hostname was cached.

 I hope that this can go into 0.2.4. The fix shouldn't be too difficult
 once we have decided on how to change the control spec. Having ADDRMAP
 work in 0.2.3, then not always work in 0.2.4 and then work again in 0.2.5
 would be bad.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/8596#comment:2>
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