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From: Nerius Landys <nlandys@gmail.com>
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Subject: Re: UDP packet spoofed LAN source address?
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>
>
> > Maybe, is there a simple 10 line C program that I can run and compile to
> > check if this scenario is possible on _my_ server?
>
> 'netcat' has the capability built in.
>
>
root# echo "hi" | nc -u -w 1 -p 30002 -s 64.156.193.115 daffy 30001
nc: bind failed: Can't assign requested address

I don't seem to be able to spoof a source address using netcat, unless I'm
missing something in the man page.