anchor.diff:      Config2.
   
   init_per_testcase(Testcase, Config) ->
  -    % dc_clustering must be activated
  +    % dc_clustering must be activated and a radius must exist
       EnableClustering = {dc_clustering_enable, true},
  +    ClusterRadius = {dc_clustering_radius, 1000},
       case Testcase of
           single_node ->
               unittest_helper:stop_ring(),
  
positive.code:             unittest_helper:make_ring(1, [{config, [
                              {log_path, PrivDir}
                              , EnableClustering
                          ]}]),
              timer:sleep(500);
          two_nodes ->
  
negative.code:             unittest_helper:make_ring(2, [{config, [
                              {log_path, PrivDir}
                              , EnableClustering
                              , ClusterRadius
                          ]}]),
              timer:sleep(500);
          _Else -> ok
  