l2j-server-game/dist/game/config/default-ipconfig.xml

<?xml version="1.0" encoding="UTF-8"?>
<!-- Note: If file is named "ipconfig.xml" this data will be used as network configuration, otherwise server will configure it automatically! -->
<!-- Externalhost here (Internet IP) or Localhost IP for local test -->
<gameserver address="127.0.0.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../data/xsd/ipconfig.xsd">
	<!-- Localhost here -->
	<define subnet="127.0.0.0/8" address="127.0.0.1" />
	<!-- Internalhosts here (LANs IPs) -->
	<define subnet="10.0.0.0/8" address="10.0.0.0" />
	<define subnet="172.16.0.0/19" address="172.16.0.0" />
	<define subnet="192.168.0.0/16" address="192.168.0.0" />
</gameserver>