anchor.diff:  
   -module(dist_test).
   -export([cfg/1,setup/1,cleanup/1,run/1]).
  --export([killconns/0]).
  +-export([killconns/0,call_start/1,call_receive/1]).
   -define(INF(F,Param),io:format("~p ~p:~p ~s~n",[ltime(),?MODULE,?LINE,io_lib:fwrite(F,Param)])).
   -define(INF(F),?INF(F,[])).
   -define(NUMACTORS,100).
  
negative.code: 
  % Nodes have been closed
  cleanup(_Param) ->
  	os:cmd("iptables --flush"),
  	ok.
  
  run(Param) ->
  