uPNP shows these open, as far as I can tell. Can I test this somehow, telnet or ssh to my external IP over 16261? 8766? Should I expect some sort of response?
What I find weird is that this only happens once but when I compared it to other logs it occurs often:
LOG : General , 1660872076633> 27,383,567> command entered via server console (System.in): "ping@pong"
Every time it states that coop master isn't responding though.
LOG : General , 1660872136722> 27,443,656> Coop master is not responding, terminating
LOG : Multiplayer , 1660872136722> 27,443,656> java.base/java.lang.Thread.getStackTrace(Unknown Source)
LOG : Multiplayer , 1660872136722> 27,443,657> zombie.debug.DebugLogStream.printStackTrace(DebugLogStream.java:159)
LOG : Multiplayer , 1660872136723> 27,443,657> zombie.debug.DebugLogStream.printStackTrace(DebugLogStream.java:146)
LOG : Multiplayer , 1660872136723> 27,443,657> zombie.network.ServerMap.QueueQuit(ServerMap.java:91)
LOG : Multiplayer , 1660872136723> 27,443,657> zombie.network.GameServer.main(GameServer.java:1053)