anchor.diff:      [
        traffic_send_and_recv_counters_tcp4,
        traffic_send_and_recv_counters_tcpL,
  +     traffic_sendmsg_and_recvmsg_counters_tcp4,
  +     traffic_sendmsg_and_recvmsg_counters_tcpL,
        traffic_sendto_and_recvfrom_counters_udp4,
        traffic_sendto_and_recvfrom_counters_udpL
       ].
  
positive.code:                                  proto  => default,
                                   recv   => fun(S)    -> socket:recv(S)    end,
                                   send   => fun(S, D) -> socket:send(S, D) end},
                     ok = traffic_send_and_recv_tcp(InitState)
             end).
  
  
negative.code: 
           %% *** Traffic ***
           traffic_send_and_recv_counters_tcp4/1,
           traffic_send_and_recv_counters_tcpL/1,
           traffic_sendmsg_and_recvmsg_counters_tcp4/1,
           traffic_sendmsg_and_recvmsg_counters_tcpL/1,
           traffic_sendto_and_recvfrom_counters_udp4/1,
           traffic_sendto_and_recvfrom_counters_udpL/1,
  
           traffic_send_and_recv_chunks_tcp4/1,
  