[tor-bugs] #33241 [Core Tor/Tor]: Prop 312: 3.2.5. Use Directory Header IPv6 Addresses

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#33241: Prop 312: 3.2.5. Use Directory Header IPv6 Addresses
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     Reporter:  teor            |      Owner:  teor
         Type:  task            |     Status:  assigned
     Priority:  Medium          |  Milestone:  Tor: 0.4.4.x-final
    Component:  Core Tor/Tor    |    Version:
     Severity:  Normal          |   Keywords:  prop312, ipv6
Actual Points:                  |  Parent ID:  #33049
       Points:                  |   Reviewer:
      Sponsor:  Sponsor55-must  |
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 This is a parent ticket.

 If relays are unable to discover their IPv6 address in any other way, they
 should get their IPv6 address from the X-Your-Address-Is HTTP header in
 tor directory documents. To support this change, we propose that relays
 start fetching directory documents over IPv4 and IPv6.

 We propose that bridges continue to only fetch directory documents over
 IPv4, because they try to imitate clients. Therefore, they can't use X
 -Your-Address-Is HTTP headers to find their IPv6 addresses.

 See proposal 312, section 3.2.5:
 https://gitweb.torproject.org/torspec.git/tree/proposals/312-relay-auto-
 ipv6-addr.txt#n429

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/33241>
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