[tor-bugs] #27490 [Core Tor/Tor]: When ClientPreferIPv6ORPort is set to auto, and a relay is being chosen for a directory or orport connection, prefer IPv4 or IPv6 at random

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#27490: When ClientPreferIPv6ORPort is set to auto, and a relay is being chosen for
a directory or orport connection, prefer IPv4 or IPv6 at random
--------------------------+------------------------------------
 Reporter:  neel          |          Owner:  neel
     Type:  enhancement   |         Status:  merge_ready
 Priority:  Medium        |      Milestone:  Tor: 0.3.6.x-final
Component:  Core Tor/Tor  |        Version:
 Severity:  Normal        |     Resolution:
 Keywords:  ipv6          |  Actual Points:
Parent ID:  #17835        |         Points:
 Reviewer:  teor          |        Sponsor:
--------------------------+------------------------------------
Changes (by teor):

 * keywords:   => ipv6
 * status:  needs_review => merge_ready


Comment:

 Replying to [comment:17 teor]:
 > We should also test it with chutney with ClientAutoIPv6ORPort 1 and 0.
 I'll do that this afternoon.

 Sorry, I ran out of time on Friday.

 This branch passes all chutney networks with:
 * (ClientAutoIPv6ORPort default)
 * ClientAutoIPv6ORPort 1
 There are no unexpected warnings in these chutney networks.

 I'm still testing:
 * ClientAutoIPv6ORPort 0 (which is the default, so it should be the same
 as the first run)

 Let's merge this experimental option, and see how it goes.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/27490#comment:18>
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