code: def _is_tp(pkt):
          
  
          tp = [SOMEIP.TYPE_TP_REQUEST, SOMEIP.TYPE_TP_REQUEST_NO_RET,
                SOMEIP.TYPE_TP_NOTIFICATION, SOMEIP.TYPE_TP_RESPONSE,
                SOMEIP.TYPE_TP_ERROR]
          if isinstance(pkt, Packet):
              return pkt.msg_type in tp
          else:
              return pkt[15] in tp
docs: Returns true if pkt is using SOMEIP-TP, else returns false.