[tor-bugs] #33901 [Core Tor/Tor]: Allow IPv6 extend cells

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#33901: Allow IPv6 extend cells
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     Reporter:  teor            |      Owner:  teor
         Type:  enhancement     |     Status:  assigned
     Priority:  Medium          |  Milestone:  Tor: 0.4.4.x-final
    Component:  Core Tor/Tor    |    Version:
     Severity:  Normal          |   Keywords:  ipv6, prop311
Actual Points:  0.5             |  Parent ID:  #33817
       Points:  0.5             |   Reviewer:
      Sponsor:  Sponsor55-must  |
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 As part of #33817, we want to allow IPv6 extend cells.

 We want clients and relays to send:
 * dual-stack EXTEND2 cells
 * IPv6-only EXTEND2 cells

 We want relays to parse:
 * dual-stack EXTEND2 cells
 * IPv6-only EXTEND2 cells

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/33901>
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