FreeBSD kernel module and sending udp packets

[Julian Elischer]

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.