[tor-bugs] #4563 [Tor Client]: Enable clients to talk to public bridges via IPv6

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#4563: Enable clients to talk to public bridges via IPv6
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 Reporter:  karsten     |          Owner:  ln5                      
     Type:  project     |         Status:  assigned                 
 Priority:  normal      |      Milestone:  Sponsor G: March 31, 2012
Component:  Tor Client  |        Version:                           
 Keywords:              |         Parent:                           
   Points:              |   Actualpoints:                           
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Comment(by nickm):

 Replying to [comment:4 ln5]:
 > Replying to [comment:2 karsten]:
 > >  * The bridge authority should include the Running flag if the bridge
 is reachable over the IPv4 OR address and port stated in the router line
 of its descriptor.  This is for backwards compatibility reasons.  A bridge
 which is reachable over IPv4 while announcing a misconfigured IPv6 address
 should still be given out to IPv4 clients.
 >
 > This contradicts text in proposal 186
 >
 >   An authority shouldn't list a node as Running unless every
 >   or-address line it advertises looks like it will work.
 >
 > IIRC, I've heard people (Nick?) talking about a Running6 flag.  Is
 > this the time for such a flag?

 Maaaybe.  One thing we never figured out was how to deal with multiple
 addresses when there can be more than one ipv4 or ipv6 address.  Having a
 "running6" flag doesn't make too much sense in the light of the
 possibility of a node having multiple IPv4 or IPv6 addresses.

 One possibility is for the authorities to only include "a" lines for
 addresses that look to be running, and for the voting algorithm to include
 only those a lines listed by a majority of authorities.  That way we
 wouldn't need one flag per address.  Another possibility is to stick an
 (optional) Running flag on each a line.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/4563#comment:5>
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