docs: def _pcap_service_control(action, askadmin=True):
      """Internal util to run pcap control command"""
      command = action + ' ' + pcap_service_name()
      res, code = _exec_cmd(_encapsulate_admin(command) if askadmin else command)
      if code != 0:
          warning(res.decode("utf8", errors="ignore"))
      return (code == 0)