--- old/src/java.base/share/classes/java/net/Inet6Address.java	2019-08-27 17:27:58.286324386 -0700
+++ new/src/java.base/share/classes/java/net/Inet6Address.java	2019-08-27 17:27:58.074324386 -0700
@@ -363,6 +363,7 @@
 
     private final transient Inet6AddressHolder holder6;
 
+    @java.io.Serial
     private static final long serialVersionUID = 6880410070516793377L;
 
     // Perform native initialization
@@ -562,7 +563,7 @@
      * @serialField scope_ifname_set boolean
      * @serialField ifname String
      */
-
+    @java.io.Serial
     private static final ObjectStreamField[] serialPersistentFields = {
          new ObjectStreamField("ipaddress", byte[].class),
          new ObjectStreamField("scope_id", int.class),
@@ -581,6 +582,7 @@
      * including the scope information, only if the
      * scoped interface name is valid on this system
      */
+    @java.io.Serial
     private void readObject(ObjectInputStream s)
         throws IOException, ClassNotFoundException {
         NetworkInterface scope_ifname = null;
@@ -644,6 +646,7 @@
      * scope_ifname field as a String, rather than a NetworkInterface
      * which is not serializable
      */
+    @java.io.Serial
     private synchronized void writeObject(ObjectOutputStream s)
         throws IOException
     {