[tor-bugs] #5547 [Tor]: Add support for resolving destination names to IPv6 and exiting to IPv6 destinations

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#5547: Add support for resolving destination names to IPv6 and exiting to IPv6
destinations
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 Reporter:  karsten                                    |          Owner:  nickm             
     Type:  project                                    |         Status:  needs_review      
 Priority:  normal                                     |      Milestone:  Tor: 0.2.4.x-final
Component:  Tor                                        |        Version:                    
 Keywords:  SponsorF20121101 needs-proposal tor-relay  |         Parent:                    
   Points:                                             |   Actualpoints:                    
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Comment(by andrea):

 I know this is a bit of an abstract concern, since we're unlikely to be
 worried about any protocols other than IPv4 and IPv6 at any point in
 the near future, but it bothers me a bit that we now have two protocols
 and in some places we're dealing with them by ad-hoc code that effectively
 embeds knowledge of what protocols we support in a hardwired way.  Things
 like the expansion of AF_UNSPEC into AF_INET and AF_INET6 wildcards in
 policy_expand_unspec() of commit 8e33d77ee1cc73fc5638caff886d16a1a7779646
 feel like they should be more table-driven or something, I guess.
 Similar comments for exit_policy_remove_redundancies() in that commit.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/5547#comment:16>
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