Howto send a limited broadcast?

[tmm]

Bruce M. Simpson wrote:
> tmm wrote:
>> So, can anyone suggest how I can send a limited broadcast (on an 
>> interface that has been initalized with an IP and a subnet)?
>
> Use the IP_ONESBCAST option and send to the network broadcast address 
> for that subnet. The stack will change it into 255.255.255.255 on 
> output. See man page ip(4) for details.
>
> It's a hack, but it's largely due to how the stack has worked 
> historically.
>
> BMS
Thanks.  I wasn't aware of that option.

But now I find that this option is not present in my (eCos port of) 
FreeBSD stack.  Either it was removed during the port, or the ported 
version is too old.

Perhaps the best thing for me to do is to look at the 'normal' FreeBSD 
stack (as opposed to the eCos one) and see how IP_ONESBCAST is 
implemented.  Then perhaps I could do the same thing in my FreeBSD stack.

Is there a way for me to download the FreeBSD source code without 
actually downloading, burning, and installing FreeBSD?  Looking around 
the FreeBSD website I don't see a source download link.

thanks,
Tom.