Question Best way to find host IP in local Lobby

Hello everyone
I m trying to develop a simple multiplayer mobile phone game that works using the local network (no internet, just the WiFi). I m working with the lobby and i was wondering if there is an easy way to implement a method for the player to find the match automatically. Right now the player have to write down the Host IP adress. I tried to make a IP sweep to find the server ip automatically but i failed horribly and i did not find any tutorial about this topic. I read there was a component called NetworkDiscovery that was meant for this purpose but it is deprecated. Any idea of which would be the easier way to implement or any tutorial that could help me will be REALLY appreciated.
Thank you

 

Can't you query for lobbies using the lobby service?

QueryResponse lobbies = await Lobbies.Instance.QueryLobbiesAsync(options);