[tor-bugs] #21283 [Core Tor/Tor]: Remove broken fallback directory mirrors

[Tor Bug Tracker & Wiki]

#21283: Remove broken fallback directory mirrors
-------------------------------------------------+-------------------------
 Reporter:  teor                                 |          Owner:
     Type:  defect                               |         Status:
                                                 |  needs_revision
 Priority:  Medium                               |      Milestone:  Tor:
                                                 |  0.3.0.x-final
Component:  Core Tor/Tor                         |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  fallback, 028-backport,              |  Actual Points:
  029-backport                                   |
Parent ID:                                       |         Points:  1
 Reviewer:                                       |        Sponsor:
-------------------------------------------------+-------------------------

Comment (by teor):

 I emailed 12 operators about 15 relays.
 (The remaining 16 were long-term downtime or low averages, which operators
 can't fix.)

 11 relays were on very old or non-recommended versions.
 2 relays had added IPv6 addresses.
 1 relay required a manual IPv6 address update due to #21460.

 If everyone upgrades, we should be back to around ~160 fallbacks in a week
 or two when the list is regenerated.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/21283#comment:7>
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