code: async def discover(ignore_list=[], max_wait=30, loop=None):
      
      stbs = []
      try:
          async with timeout(max_wait, loop=loop):
              def responses_callback(notify):
                  """Queue notify messages."""
                  _LOGGER.debug("Found: %s", notify.ip_address)
                  stbs.append(notify.ip_address)
  
              mr_protocol = await install_mediaroom_protocol(responses_callback=responses_callback)
              await asyncio.sleep(max_wait)
      except asyncio.TimeoutError:
          mr_protocol.close()
          _LOGGER.debug("discover() timeout!")
  
      return list(set([stb for stb in stbs if stb not in ignore_list]))
docs: List STB in the network.