adding [#8902](https://trac.torproject.org/projects/tor/ticket/8902) ([diff](https://trac.torproject.org/projects/tor/wiki/org/sponsors/SponsorR/Re achability?action=diff&version=2)) URL: https://trac.torproject.org/projects/tor/wiki/org/sponsors/SponsorR/Reachability?version=2