Re: [tor-bugs] #17811 [Tor]: Tor Clients on IPv6

["Tor Bug Tracker & Wiki" <blackhole@xxxxxxxxxxxxxx>]

#17811: Tor Clients on IPv6
--------------------+------------------------------------
 Reporter:  teor    |          Owner:
     Type:  task    |         Status:  new
 Priority:  High    |      Milestone:  Tor: 0.2.8.x-final
Component:  Tor     |        Version:
 Severity:  Normal  |     Resolution:
 Keywords:  ipv6    |  Actual Points:
Parent ID:          |         Points:
  Sponsor:          |
--------------------+------------------------------------

Comment (by teor):

 In #17840, tor clients bootstrap over IPv6 when configured to prefer IPv6,
 or only use IPv6. We also maintain bridge clients' preference for IPv6,
 while fixing some of their address selection code.

 To prefer IPv6, a Tor client should set:
 * ClientUseIPv4 0, or
 * ClientUseIPv6 1 and ClientPreferIPv6[OR,Dir]Port 1, or
 * configure bridges.

 But this requires Tor users to know whether IPv4 or IPv6 works better for
 them, which is not ideal. In future releases, we could automatically use
 IPv6 if clients can bootstrap over it (#17217), perhaps by using a "happy
 eyeballs"-like algorithm to try both IPv4 and IPv6, and switch between
 them depending on which one works better (#17835).

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/17811#comment:2>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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