[tor-bugs] #7706 [Tor]: Excluded Tor nodes are still being used when their "Country" location field is "?"

[Tor Bug Tracker & Wiki]

#7706: Excluded Tor nodes are still being used when their "Country" location field
is "?"
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 Reporter:  bugcatcher                                        |          Owner:                    
     Type:  enhancement                                       |         Status:  needs_review      
 Priority:  major                                             |      Milestone:  Tor: 0.2.4.x-final
Component:  Tor                                               |        Version:  Tor: 0.2.4.6-alpha
 Keywords:  GeoIP, relay, security, vulnerability tor-client  |         Parent:                    
   Points:                                                    |   Actualpoints:                    
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Comment(by nickm):

 >Am I correct in the belief that options->ExcludeExitNodesUnion_ should
 always be maintained as the union of options->ExcludeNodes and
 options->ExcludeExitNodes?

 That's the intended invariant, yes.

 > Re: 1094, I think the choice of default behavior to exclude unknowns if
 the user wants any country excluded, but include an option to change it,
 is probably the right thing.

 I tend to agree.  Right now, there are 7 nodes in ??; so unless our geoip
 coverage degrades a lot, it's not much hardship to exclude {??} whenever a
 user says "ExcludeNodes {tv},{nu},{pn}".

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/7706#comment:8>
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