FULL PRODUCT VERSION :
Tried all available 1.5 versions +
Java(TM) SE Runtime Environment (build 1.6.0_01-b06)
Java HotSpot(TM) Client VM (build 1.6.0_01-b06, mixed mode, sharing)
Have not tried 1.7.

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows XP [Version 5.1.2600]

EXTRA RELEVANT SYSTEM CONFIGURATION :
Dual IP stack (IPv4 and IPv6)

A DESCRIPTION OF THE PROBLEM :
This bug must be related to bug JDK-6210227, which has not been fixed despite the claimed "fixed" status.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. Configure IPv6 an a Windows box.

2. The problem can be easily reproduced with the attached code.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Originator's IP address of the outbound TCP connection.
ACTUAL -
0.0.0.0

ERROR MESSAGES/STACK TRACES THAT OCCUR :
No error. The call just works incorrectly

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------

import java.util.*;
import java.net.*;

public class Interfaceid {
 
/**
* In order to reproduce the bug the system that runs this class must support
* IPv6.
*/
public static void main(String[] args) {
            if( null == args[0] ) {
                        System.out.println("usage: java Interfaceid <IPv6address>");
            } else {
                        String sHostname = args[0];
            System.out.println("get ip and hostname of our interface to "+sHostname);
            try {
                        InetAddress ina = InetAddress.getByName( sHostname );
                        InetSocketAddress isa = new InetSocketAddress( ina, 80 );
                Socket s = new Socket();
                s.connect( isa, 1000 );
                InetAddress iaLocal = s.getLocalAddress(); // if this comes back as 0.0.0.0 this would demonstrate issue
                String sLocalHostname = iaLocal.getHostName();
                System.out.println("local ip is "+iaLocal.getHostAddress() );
                System.out.println("local hostname is "+sLocalHostname );
            } catch(Exception e) {
                        System.out.println("Exception happened");
            }
        }
}
}
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
Unknown. Because of this problem it is impossible to implement RFC 2428 in Java.