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

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

 * owner:  (none) => nickm
 * status:  new => accepted


Comment:

 The `circuit_send_intermediate_onion_skin()` function has this code at the
 top.

 {{{
   if (tor_addr_family(&hop->extend_info->addr) != AF_INET) {
     log_warn(LD_BUG, "Trying to extend to a non-IPv4 address.");
     return - END_CIRC_REASON_INTERNAL;
   }
 }}}

 and I think a small change to `check_extend_cell()` should get the
 behavior we want from `extend_cell_format()`.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/24000#comment:1>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online

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