code: def startPacketCapture(self, pcap_output_file, pcap_data_link_type="DLT_EN10MB"):
          
  
          self._capturing = True
          self._pcap_output_file = pcap_output_file
          self._pcap_data_link_type = pcap_data_link_type
docs: :param pcap_output_file: PCAP destination file for the capture
          :param pcap_data_link_type: PCAP data link type (DLT_*), default is DLT_EN10MB