IPv6 on Windows XP

[Purnima Maheshwari \(Patni India\)]

Hi
I am running an application on an XP machine which has IPv6 Stack installed.
The following call is successful
m_hIPv6Handle =
ateFile( 
     WIN_IPV6_DEVICE_NAME,
     0,         // access mode
     FILE_SHARE_READ | FILE_SHARE_WRITE,
     NULL,        // security attributes
     OPEN_EXISTING,
     0,         // flags & attributes
     NULL        // template file
     );

But the following call returns a hardware error
DeviceIoControl(
      m_hIPv6Handle, 
      IOCTL_IPV6_QUERY_INTERFACE,
      &IPv6Query, 
      sizeof(IPv6Query),
      IPv6IF, 
      ulInfoSize, 
      &ulBytesReturned,
      NULL)

Is their any other setting required for IPv6 on Windows XP.  
Thanks and Regards
Purnima


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