RFR 8186818/10, Enable debug option for TcpTest.java

[Felix Yang]

Hi there,

     please review the patch to enable debug diagnostic for 
test/java/net/ipv6tests/TcpTest.java. Then we can know which addresses 
are being used, to isolate possible multi-homed issues.

Bug:

     https://bugs.openjdk.java.net/browse/JDK-8186818

Patch:

diff -r 162c0a6e1fe3 test/java/net/ipv6tests/TcpTest.java
--- a/test/java/net/ipv6tests/TcpTest.java    Fri Aug 25 10:52:17 2017 -0700
+++ b/test/java/net/ipv6tests/TcpTest.java    Mon Aug 28 03:34:42 2017 -0400
@@ -1,5 +1,5 @@
  /*
- * Copyright (c) 2003, 2016, Oracle and/or its affiliates. All rights 
reserved.
+ * Copyright (c) 2003, 2017, 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
@@ -26,6 +26,7 @@
   * @bug 4868820
   * @key intermittent
   * @summary IPv6 support for Windows XP and 2003 server
+ * @run main TcpTest -d
   */

  import java.net.*;


Thanks,

Felix