Updates dnsjava to 2.1.6, applying patch to set custom logger. Adds dns packages to packet logging.

src/org/jitsi/service/packetlogging/PacketLoggingService.java

@@ -39,7 +39,12 @@ public enum ProtocolName
         /**
          * ICE protocol name.
          */
-        ICE4J
+        ICE4J,
+
+        /**
+         * DNS protocol name.
+         */
+        DNS
     }
 
     /**