--- old/src/java.base/share/classes/java/net/NoRouteToHostException.java	2019-08-27 17:28:00.998324386 -0700
+++ new/src/java.base/share/classes/java/net/NoRouteToHostException.java	2019-08-27 17:28:00.790324386 -0700
@@ -34,6 +34,7 @@
  * @since   1.1
  */
 public class NoRouteToHostException extends SocketException {
+    @java.io.Serial
     private static final long serialVersionUID = -1897550894873493790L;
 
     /**