[tor-bugs] #13837 [Core Tor/Tor]: Mitigate guard discovery by pinning middle node

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#13837: Mitigate guard discovery by pinning middle node
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 Reporter:  asn                                  |          Owner:
                                                 |  mikeperry
     Type:  defect                               |         Status:
                                                 |  needs_revision
 Priority:  Medium                               |      Milestone:  Tor:
                                                 |  0.3.3.x-final
Component:  Core Tor/Tor                         |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tor-hs, tor-guard, guard-discovery-  |  Actual Points:
  prop247-controller                             |
Parent ID:  #9001                                |         Points:
 Reviewer:  asn                                  |        Sponsor:
                                                 |  SponsorV-can
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Comment (by mikeperry):

 Ok, two fixups so that we don't blame the entry guard, and emit a log
 message for some cases of this:
 https://oniongit.eu/mikeperry/tor/commit/e9c4aa7823d1396fe2f34173d25f6aa602e9c0ef
 https://oniongit.eu/mikeperry/tor/commit/cb1595040bbf4521f25548f00e93860f08aed683

 If you like those, and the stuff I am posting in response to your
 remaining comments on
 https://oniongit.eu/mikeperry/tor/commit/2829a5fe4a093e27083b4a865380964c94420320,
 then I will rebase and squash all of this stuff down, and mark it as needs
 review with a new merge request.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/13837#comment:32>
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