[tor-bugs] #24000 [Core Tor/Tor]: circuit_send_intermediate_onion_skin() and extend_cell_format() should check for IPv6

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#24000: circuit_send_intermediate_onion_skin() and extend_cell_format() should
check for IPv6
--------------------------+------------------------------------
 Reporter:  teor          |          Owner:  nickm
     Type:  defect        |         Status:  needs_review
 Priority:  Medium        |      Milestone:  Tor: 0.3.3.x-final
Component:  Core Tor/Tor  |        Version:
 Severity:  Normal        |     Resolution:
 Keywords:  ipv6          |  Actual Points:
Parent ID:  #24403        |         Points:  0.5
 Reviewer:                |        Sponsor:
--------------------------+------------------------------------
Changes (by teor):

 * parent:   => #24403


Comment:

 Does this implement IPv6 extends on relays? Or are there other bugs we
 need to fix?
 I think we should put relay IPv6 extends in 0.3.4, and add a protover for
 them. See #24403.

 I'm not sure if we need to feature gate them with a consensus parameter
 like #24868. Are there any privacy implications of a small number of
 relays doing IPv6 extends?

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/24000#comment:3>
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