ifconfig.c developer manual

[Aldinson C. Esto]

Hello Everyone,
 
I know most of you here already have extreme knowledge about freeBSD's
ins and outs.
I just want to ask specifically regarding FreeBSD's ifconfig.c's
functions and what does 
each function do.
 
No one can give me a developer's manual for such and I really need
someone to interpret 
each function for me.
 
Any help would be very much appreciated.
 
Thank you and best regards to one and all.

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