XSD: XSD for ipconfig.xml by UnAfraid.

L2J_Server/java/config/ipconfig.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!-- Externalhost here (Internet IP) or Localhost IP for local test -->
-<gameserver address="127.0.0.1">
+<gameserver address="127.0.0.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="ipconfig.xsd">
 	<!-- Localhost here -->
 	<define subnet="127.0.0.0/8" address="127.0.0.1" />
 	<!-- Internalhosts here (LANs IPs) -->

L2J_Server/java/config/ipconfig.xsd

@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
+	<xs:element name="gameserver">
+		<xs:complexType>
+			<xs:sequence minOccurs="1" maxOccurs="1">
+				<xs:element name="define" minOccurs="1" maxOccurs="unbounded">
+					<xs:complexType>
+						<xs:attribute name="address" use="required">
+							<xs:simpleType>
+								<xs:restriction base="xs:token">
+									<xs:pattern value="(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)|[.]?.*[.x][a-z]{2,3}" />
+								</xs:restriction>
+							</xs:simpleType>
+						</xs:attribute>
+						<xs:attribute name="subnet" use="required">
+							<xs:simpleType>
+								<xs:restriction base="xs:token">
+									<xs:pattern value="(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?/\d+)|(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)|[.]?.*[.x][a-z]{2,3}" />
+								</xs:restriction>
+							</xs:simpleType>
+						</xs:attribute>
+					</xs:complexType>
+				</xs:element>
+			</xs:sequence>
+			<xs:attribute name="address" use="required">
+				<xs:simpleType>
+					<xs:restriction base="xs:token">
+						<xs:pattern value="(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)|[.]?.*[.x][a-z]{2,3}" />
+					</xs:restriction>
+				</xs:simpleType>
+			</xs:attribute>
+		</xs:complexType>
+	</xs:element>
+</xs:schema>