anchor.diff:  
   traffic_cases() ->
       [
  +     {group, traffic_counters},
        {group, traffic_chunks},
        {group, traffic_pp_send_recv},
        {group, traffic_pp_sendto_recvfrom},
        {group, traffic_pp_sendmsg_recvmsg}
  +    ].
  +
  +traffic_counters_cases() ->
  +    [
  +     traffic_send_and_recv_counters_tcp4,
  +     traffic_send_and_recv_counters_udp4,
  +     traffic_send_and_recv_counters_tcpL,
  +     traffic_send_and_recv_counters_udpL
       ].
   
   traffic_chunks_cases() ->
  
positive.code:      {timetrap,{minutes,1}}].
  
  all() -> 
      Groups = [{api,            "ESOCK_TEST_API",        include},
  	      {socket_closure, "ESOCK_TEST_SOCK_CLOSE", include},
  	      {traffic,        "ESOCK_TEST_TRAFFIC",    include},
  	      {ttest,          "ESOCK_TEST_TTEST",      exclude}],
      [use_group(Group, Env, Default) || {Group, Env, Default} <- Groups].
  
  use_group(Group, Env, Default) ->
  
negative.code: 
  %% These cases tests what happens when the socket is closed/shutdown,
  %% locally or remotely.
  socket_close_cases() ->
      [
       {group, sc_ctrl_proc_exit},
       {group, sc_local_close},
  