[tor-bugs] #30992 [Core Tor/Tor]: circpadding machines have shutdown sync issues (with intro circ NACKs and other cases)

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#30992: circpadding machines have shutdown sync issues (with intro circ NACKs and
other cases)
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 Reporter:  asn                                  |          Owner:
                                                 |  mikeperry
     Type:  defect                               |         Status:
                                                 |  assigned
 Priority:  Medium                               |      Milestone:  Tor:
                                                 |  0.4.3.x-final
Component:  Core Tor/Tor                         |        Version:  Tor:
                                                 |  0.4.1.1-alpha
 Severity:  Normal                               |     Resolution:
 Keywords:  wtf-pad circpad-researchers-maybe-   |  Actual Points:
  want 043-should                                |
Parent ID:                                       |         Points:  3
 Reviewer:                                       |        Sponsor:
-------------------------------------------------+-------------------------

Comment (by mikeperry):

 Thanks for the reminder. #32040 seems like it could exacerbate the
 shutdown/restart problem, but I think is a slightly different cause than
 this.

 If we end up needing to bump the padding protocol version, we should fix
 both issues at once. I will have to spend some time pondering what we can
 do with the existing protocol. There may also be a subtle way to fix both
 and still preserve compatibility with relays without bumping padding
 protocol versions on them. We should consider as many of these kinds of
 issues in that analysis.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/30992#comment:23>
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