[tor-bugs] #635 [Tor Relay]: eventdns and caching of NXDOMAIN

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#635: eventdns and caching of NXDOMAIN
------------------------------+---------------------------------------------
 Reporter:  Safari            |         Type:  defect   
   Status:  new               |     Priority:  trivial  
Milestone:  Tor: unspecified  |    Component:  Tor Relay
  Version:  0.1.2.19          |   Resolution:  None     
 Keywords:  dns               |       Parent:           
------------------------------+---------------------------------------------
Changes (by nickm):

  * keywords:  => dns
  * milestone:  post 0.2.1.x => Tor: unspecified


Old description:

> Local DNS proxy might not include the SOA record (in case of NXDOMAIN)
> when it is resolving for tor,
> but faking a SOA record should be easy...  maybe a config option or
> #define for the TTL of cached NXDOMAIN?
>
> Now in case of NXDOMAIN, eventdns does not include Authority RR with SOA
> record, so clients querying
> tor can not cache the NXDOMAIN.  They just keep on querying the same
> thing again and again.
>

> [Automatically added by flyspray2trac: Operating System: All]

New description:

 Local DNS proxy might not include the SOA record (in case of NXDOMAIN)
 when it is resolving for tor,
 but faking a SOA record should be easy...  maybe a config option or
 #define for the TTL of cached NXDOMAIN?

 Now in case of NXDOMAIN, eventdns does not include Authority RR with SOA
 record, so clients querying
 tor can not cache the NXDOMAIN.  They just keep on querying the same thing
 again and again.


 [Automatically added by flyspray2trac: Operating System: All]

--

Comment:

 Moving to the "unspecified" milestone: this would be a fine thing to fix
 in any DNS revamp, but it is hurting nothing.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/635#comment:2>
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