[tor-bugs] #7193 [Tor]: Tor's sybil protection doesn't consider IPv6

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#7193: Tor's sybil protection doesn't consider IPv6
---------------------------+------------------------------------------------
 Reporter:  asn            |          Owner:                    
     Type:  defect         |         Status:  new               
 Priority:  normal         |      Milestone:  Tor: 0.2.4.x-final
Component:  Tor            |        Version:                    
 Keywords:  ipv6 tor-auth  |         Parent:                    
   Points:                 |   Actualpoints:                    
---------------------------+------------------------------------------------
Changes (by ln5):

  * milestone:  Tor: 0.2.3.x-final => Tor: 0.2.4.x-final


Comment:

 The IPv6 equivalent of an IPv4 /32 is a /64. We could have auths
 reject multiple (more than AuthDirMaxServersPerAddr) IPv6 OR ports
 with matching upper 64 bits. While the general abundance of IPv6
 addresses might make this a bit toothless it shouldn't hurt.

 Note that clients are not using IPv6 OR ports by default yet.

 Moving to 0.2.4.x-final -- 0.2.3 dir auths don't handle IPv6 OR ports.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/7193#comment:1>
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