--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/net/ipv6tests/B6521014.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,126 @@
+/*
+ * Copyright (c) 2007 Sun Microsystems, Inc.  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
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/*
+ * @test
+ * @bug 6521014 6543428
+ * @summary IOException thrown when Socket tries to bind to an local IPv6 address on SuSE Linux
+ */
+
+
+import java.net.*;
+import java.io.*;
+import java.util.*;
+
+
+/*
+ *
+ * What this testcase is to test is a (weird) coupling through the
+ * cached_scope_id field of java.net.Inet6Address. Native method
+ * NET_InetAddressToSockaddr as in Linux platform will try to write
+ * and read this field, therefore Inet6Address becomes 'stateful'.
+ * So the coupling. Certain executive order, e.g. two methods use
+ * the same Inet6Address instance as illustrated in this test case,
+ * will show side effect of such coupling.
+ *
+ * And on Windows, NET_InetAddressToSockaddr() did not assign appropriate
+ * sin6_scope_id value to sockaddr_in6 structure if there's no one coming
+ * with Inet6Address instance, which caused bind exception. This test use
+ * link-local address without %scope suffix, so it is also going to test
+ * that.
+ *
+ */
+public class B6521014 {
+
+    static InetAddress sin;
+
+    static Inet6Address getLocalAddr () throws Exception {
+        Enumeration e = NetworkInterface.getNetworkInterfaces();
+        while (e.hasMoreElements()) {
+            NetworkInterface ifc = (NetworkInterface) e.nextElement();
+            Enumeration addrs = ifc.getInetAddresses();
+            while (addrs.hasMoreElements()) {
+                InetAddress a = (InetAddress)addrs.nextElement();
+                if (a instanceof Inet6Address) {
+                    Inet6Address ia6 = (Inet6Address) a;
+                    if (ia6.isLinkLocalAddress()) {
+                        // remove %scope suffix
+                        return (Inet6Address)InetAddress.getByAddress(ia6.getAddress());
+                    }
+                }
+            }
+        }
+        return null;
+    }
+
+    static void test1() throws Exception {
+        ServerSocket ssock;
+        Socket sock;
+        int port;
+
+        ssock = new ServerSocket(0);
+        port = ssock.getLocalPort();
+        sock = new Socket();
+        try {
+            sock.connect(new InetSocketAddress(sin, port), 100);
+        } catch (SocketTimeoutException e) {
+            // time out exception is okay
+            System.out.println("timed out when connecting.");
+        }
+    }
+
+    static void test2() throws Exception {
+        Socket sock;
+        ServerSocket ssock;
+        int port;
+        int localport;
+
+        ssock = new ServerSocket(0);
+        ssock.setSoTimeout(100);
+        port = ssock.getLocalPort();
+        localport = port + 1;
+        sock = new Socket();
+        sock.bind(new InetSocketAddress(sin, localport));
+        try {
+            sock.connect(new InetSocketAddress(sin, port), 100);
+        } catch (SocketTimeoutException e) {
+            // time out exception is okay
+            System.out.println("timed out when connecting.");
+        }
+    }
+
+    public static void main(String[] args) throws Exception {
+        sin = getLocalAddr();
+        if (sin == null) {
+            System.out.println("Cannot find a link-local address.");
+            return;
+        }
+
+        try {
+            test1();
+            test2();
+        } catch (IOException e) {
+            throw new RuntimeException("Test failed: cannot create socket.", e);
+        }
+    }
+}