if (version >= Rex::Version.new('5.0.0') && version < Rex::Version.new('5.1.0')) ||
       (version >= Rex::Version.new('6.0.0') && version < Rex::Version.new('6.1.0')) ||
       (version >= Rex::Version.new('6.7.0') && version < Rex::Version.new('6.8.0')) ||
       (version >= Rex::Version.new('7.0.0') && version < Rex::Version.new('7.0.2'))
      return CheckCode::Appears