code: def load_manuf(filename):
      
      manufdb = ManufDA(_name=filename)
      with open(filename, "rb") as fdesc:
          for line in fdesc:
              try:
                  line = line.strip()
                  if not line or line.startswith(b"#"):
                      continue
                  parts = line.split(None, 2)
                  oui, shrt = parts[:2]
                  lng = parts[2].lstrip(b"#").strip() if len(parts) > 2 else ""
                  lng = lng or shrt
                  manufdb[oui] = plain_str(shrt), plain_str(lng)
              except Exception:
                  log_loading.warning("Couldn't parse one line from [%s] [%r]",
                                      filename, line, exc_info=True)
      return manufdb
docs: Load manuf file from Wireshark.
      param:
       - filename: the file to load the manuf file from