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Date: Mon, 08 Dec 2008 00:32:15 -0800
From: Julian Elischer <julian@elischer.org>
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To: Ferner Cilloniz <fernercc@gmail.com>
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Cc: freebsd-net@freebsd.org
Subject: Re: FreeBSD kernel module and sending udp packets
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Julian Elischer wrote:
> Ferner Cilloniz wrote:
>> Thanks for the reply. I read something about that but I didn't
>> understand what was being said.
>>
>> Can you please help me in understanding. I have googled for sample code
>> and didn't find anything useful. Can you, or anyone else, please help me
>> understand this?
> 
> http://people.freebsd.org/~julian/netgraph.html

I should add:

http://fxr.watson.org/fxr/source/netgraph/ng_sample.c
  as a pointer to netgraph sources.