[tor-bugs] #18079 [Stem]: stem can't parse output of resolver "ss -nput"

Tor Bug Tracker & Wiki blackhole at torproject.org
Wed Jan 20 22:33:33 UTC 2016


#18079: stem can't parse output of resolver "ss -nput"
--------------------+--------------------------
 Reporter:  toralf  |          Owner:  atagar
     Type:  defect  |         Status:  reopened
 Priority:  Medium  |      Milestone:
Component:  Stem    |        Version:
 Severity:  Normal  |     Resolution:
 Keywords:          |  Actual Points:
Parent ID:          |         Points:
  Sponsor:          |
--------------------+--------------------------

Comment (by cypherpunks):

 Replying to [comment:1 atagar]:
 > One last thing - in the example you gave above I don't understand the
 format of the 'beam' connections (for example **::ffff:5.9.158.75:5222**).
 Seems it's an IPv6 address mashed together with an IPv4 address? At
 present Stem treats those lines as being malformed.

 This is a well-formed IPv6 address, a standard representation produced by
 inet_ntop(3).
 Please see: https://tools.ietf.org/html/rfc2765. (Warning: at least one
 Wikipedia article refers to the revised RFC —which obsoletes this one— but
 forgets to update the terminology, resulting in misinformation.)

 tl;dr: It's called "IPv4-mapped IPv6 address", in that example the address
 is 5.9.158.75 written in IPv6 (port 5222). The full IPv6 address is:
 {{{0000:0000:0000:0000:0000:0000:0000:0000:0000:0000:0000:ffff:0005:0009:009e:004b}}}

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/18079#comment:6>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online


More information about the tor-bugs mailing list