GUACAMOLE-1855: Implement property for tracking list of IP Addresses.

guacamole-ext/pom.xml

@@ -110,6 +110,13 @@
             <artifactId>jackson-databind</artifactId>
         </dependency>
 
+        <!-- Library for unified IPv4/6 parsing and validation -->
+        <dependency>
+            <groupId>com.github.seancfoley</groupId>
+            <artifactId>ipaddress</artifactId>
+            <version>5.5.0</version>
+        </dependency>
+
     </dependencies>
 
 </project>