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dir auths no longer vote Guard if they're not voting V2Dir

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Directory authorities no longer vote in favor of the Guard flag
for relays that don't advertise directory support.

Starting in Tor 0.3.0.1-alpha, Tor clients have been avoiding using
such relays in the Guard position, leading to increasingly broken load
balancing for the 5%-or-so of Guards that don't advertise directory
support.

Fixes bug 22310; bugfix on 0.3.0.6.
This commit is contained in:
Roger Dingledine 2018-04-02 00:20:01 -04:00
parent 6aaafb0672
commit 961d2ad597
2 changed files with 9 additions and 0 deletions
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8
changes/bug22310 Normal file
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@ -0,0 +1,8 @@
o Major bugfixes (performance, load balancing):
- Directory authorities no longer vote in favor of the Guard flag
for relays that don't advertise directory support. Starting in Tor
0.3.0.1-alpha, Tor clients have been avoiding using such relays in
the Guard position, leading to increasingly broken load balancing
for the 5%-or-so of Guards that don't advertise directory support.
Fixes bug 22310; bugfix on 0.3.0.6.

1
src/or/dirserv.c
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@ -2266,6 +2266,7 @@ set_routerstatus_from_routerinfo(routerstatus_t *rs,
rs->is_valid = node->is_valid;
if (node->is_fast && node->is_stable &&
ri->supports_tunnelled_dir_requests &&
((options->AuthDirGuardBWGuarantee &&
routerbw_kb >= options->AuthDirGuardBWGuarantee/1000) ||
routerbw_kb >= MIN(guard_bandwidth_including_exits_kb,