[tor-bugs] #24805 [Core Tor/Fallback Scripts]: Update fallback whitelist and blacklist in late 2018

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#24805: Update fallback whitelist and blacklist in late 2018
-------------------------------------------------+-------------------------
 Reporter:  teor                                 |          Owner:  (none)
     Type:  enhancement                          |         Status:
                                                 |  assigned
 Priority:  Medium                               |      Milestone:  Tor:
                                                 |  unspecified
Component:  Core Tor/Fallback Scripts            |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  fallback, 034-triage-20180328,       |  Actual Points:
  034-removed-20180328, 035-removed-20180711,    |
  035-roadmap                                    |
Parent ID:  #24786                               |         Points:  0.5
 Reviewer:                                       |        Sponsor:
-------------------------------------------------+-------------------------
Changes (by teor):

 * keywords:
     fallback, 034-triage-20180328, 034-removed-20180328,
     035-removed-20180711
     =>
     fallback, 034-triage-20180328, 034-removed-20180328,
     035-removed-20180711, 035-roadmap


Comment:

 Replying to [comment:36 nickm]:
 > These tickets are being triaged out of 0.3.5.  The ones marked "035
 -roadmap-proposed" may return.

 Oops, this is on the 0.3.5 roadmap, if:
 * we reach the 30% changed/new relays threshold, so the list can help with
 censorship
 * we reach the 25% down relays threshold in consensus health

 Here's how we're progressing:

 The branch now has ~35 new and ~2 changed IPv4 addresses.

 Our target is >30% of the final count having new or changed IPv4
 addresses, we currently have a best case scenario of:
 (2 + 35)/(150 + 35) = 20%.

 If we have 185 fallbacks, we can also increase the limit per operator to
 185 x 5% = 9 relays.
 That should gain us 10 more relays from existing large operators, which
 gives us 24% new or changed IPv4 addresses.

 20/150 = 13% of fallbacks are down.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/24805#comment:39>
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