Hmmm.........................
 
May be I was in a hurry. I'll go through it more deeply. Thanks for the details. 

Abhijit Menon-Sen <[EMAIL PROTECTED]> wrote:
At 2004-03-20 00:30:02 +0000, [EMAIL PROTECTED] wrote:
>
> I checked sendto manual and it says that it sends data on connected
> sockets.

No, it doesn't. You can use sendto(2) on any socket, connected or not.
You need a connected socket only for send(2). Furthermore, please note
that there is no such thing as a UDP "connection" by definition, since
UDP is a connectionless protocol.

The kernel allows you to call connect(2) on UDP sockets, to specify an
arbitrary peer address, so that you can use send(2). But that's just a
convenience.

> This gives me hint that to send such a packet I have to write a
> program that tries to connect on that port using UDP. 

Here's another hint: ask Google about "UDP client example".

-- ams

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Sumit Chaudhary
Network Seurity Engg.
R Systems
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