tor/changes/feature7706

  o Minor features:
    - When any country code is listed in ExcludeNodes or
      ExcludeExitNodes, and we have GeoIP information, also exclude
      all nodes with unknown countries ({??} and {A1} if
      present). This behavior is controlled by the new
      GeoIPExcludeUnknown option: you can make such nodes always
      excluded with 'GeoIPExcludeUnknown 1', and disable the feature
      with 'GeoIPExcludeUnknown 0'. Setting 'GeoIPExcludeUnknown auto'
      gets you the default behavior.  Implements feature 7706.
When excluding nodes by country, exclude {??} and {A1} too This is ticket 7706, reported by "bugcatcher." The rationale here is that if somebody says 'ExcludeNodes {tv}', then they probably don't just want to block definitely Tuvaluan nodes: they also want to block nodes that have unknown country, since for all they know such nodes are also in Tuvalu. This behavior is controlled by a new GeoIPExcludeUnknown autobool option. With the default (auto) setting, we exclude ?? and A1 if any country is excluded. If the option is 1, we add ?? and A1 unconditionally; if the option is 0, we never add them. (Right now our geoip file doesn't actually seem to include A1: I'm including it here in case it comes back.) This feature only takes effect if you have a GeoIP file. Otherwise you'd be excluding every node. 2013-01-17 18:07:36 -05:00			`o Minor features:`
			`- When any country code is listed in ExcludeNodes or`
			`ExcludeExitNodes, and we have GeoIP information, also exclude`
			`all nodes with unknown countries ({??} and {A1} if`
			`present). This behavior is controlled by the new`
			`GeoIPExcludeUnknown option: you can make such nodes always`
			`excluded with 'GeoIPExcludeUnknown 1', and disable the feature`
			`with 'GeoIPExcludeUnknown 0'. Setting 'GeoIPExcludeUnknown auto'`
			`gets you the default behavior. Implements feature 7706.`