iptables rules for hosting a LAN world
Apparently, you need to accept traffic on:
- the TCP port minecraft randomly picks after you open your world to LAN, or your friends won't be able to join;
- UDP port 4445, or the game will hang when you save and exit from the world.
Minecraft wayland should work now
According to https://bugs.mojang.com/browse/MCL-12215?focusedCommentId=601710&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-601710 it should work now and I am running it without the GDK_BACKEND=x11 hack.