> Yuck. I would disagree. If I do an explicit send to 255.255.255.255, I 
> would expect the destination to remain 255.255.255.255, and not be 
> changed by the system to something else.
> If I want a explicit network directed broadcast, I can do that myself.
>
> But that's just my opinion on it.
>
>     Johnny
>
I would tend to agree with that sentiment. However, I have been looking 
at bpf(4) and reading up on it and it looks
to do what I need so my immediate problem is resolved. Thanks for all 
the useful responses.

Ian