--- a/src/java.base/windows/classes/java/net/TwoStacksPlainDatagramSocketImpl.java	Thu Mar 29 08:52:41 2018 -0700
+++ b/src/java.base/windows/classes/java/net/TwoStacksPlainDatagramSocketImpl.java	Thu Mar 29 20:12:02 2018 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2007, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -40,7 +40,7 @@
  * @author Chris Hegarty
  */
 
-class TwoStacksPlainDatagramSocketImpl extends AbstractPlainDatagramSocketImpl
+final class TwoStacksPlainDatagramSocketImpl extends AbstractPlainDatagramSocketImpl
 {
     /* Used for IPv6 on Windows only */
     private FileDescriptor fd1;
@@ -105,8 +105,16 @@
     protected synchronized void bind0(int lport, InetAddress laddr)
         throws SocketException
     {
+        // The native bind0 may close one or both of the underlying file
+        // descriptors, and even create new sockets, so the safest course of
+        // action is to unregister the socket cleaners, and register afterwards.
+        SocketCleanable.unregister(fd);
+        SocketCleanable.unregister(fd1);
+
         bind0(lport, laddr, exclusiveBind);
 
+        SocketCleanable.register(fd);
+        SocketCleanable.register(fd1);
     }
 
     protected synchronized void receive(DatagramPacket p)