> Hi
>
[quoted text clipped - 14 lines]
> where we are putting this, we are trying very hard to avoid C++ or
> Objective-C code.
AFAIK, all Mac OS X system calls are callable from C.
> We use the code for getting the MAC address of the host,
There is no "the MAC address of the host".
> so any other ideas
> on how to do that in C that will work in the future also appreciated.
See <http://developer.apple.com/technotes/tn/tn1103.html> for more info
Reinder