If I play on linux with my brother that is playing on windows then I cant connect to his Lan-world

When me and my brother are trying to play in minecraft, while he´s running windows and i´m on linux, then we can´t connect to our Lan-World´s. When I boot on windows we can play together. I don´t know if it works if my brother would run linux, but I asumme that it would work too. We just tried it on the versions around 1.7 so I don´t know if it works with the newest updates and it doesn´t let me to show that we tested it only on 1.7 . And btw. we both can connect to servers. Our computers are fully updated and we have the best internet that you can have here.