[tor-bugs] #24864 [Core Tor/Tor]: directory authorities take a while to update relays' Tor versions

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#24864: directory authorities take a while to update  relays' Tor versions
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 Reporter:  cypherpunks             |          Owner:  (none)
     Type:  defect                  |         Status:  needs_information
 Priority:  Medium                  |      Milestone:  Tor: 0.3.3.x-final
Component:  Core Tor/Tor            |        Version:
 Severity:  Normal                  |     Resolution:
 Keywords:  tor-relay, tor-dirauth  |  Actual Points:
Parent ID:                          |         Points:  1
 Reviewer:                          |        Sponsor:
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Comment (by arma):

 I think the version in the vote is simply taken out of the descriptor that
 the dirauth is voting about.

 So if you're concerned that bastet is voting about a new descriptor and
 the other dirauths are voting about an old descriptor, that can happen
 sometimes, e.g. if the new descriptor has an ipv6 address that is
 unreachable, then dirauths that don't know about ipv6 will happily vote
 about the new one, whereas dirauths that do know about ipv6 will still
 vote about the old one since that's the one they think counts as Running.

 In theory a change in router->platform should not count as "differences
 are cosmetic", because see router_differences_are_cosmetic() where it says
 {{{
       strcasecmp(r1->platform, r2->platform) ||
 }}}

 More generally, if you find a case where one dirauth is voting that a
 relay is running one version and others are voting that it's running a
 different version, it means they are voting about different descriptors,
 and your next step should be to go look at each of those descriptors and
 try to guess why some of the dir auths aren't voting about the new one
 yet.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/24864#comment:7>
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