On Thu, 16 Dec 2004 12:50:22 -0800, Mitch (WebCob) <mitch at webcob dot com> wrote:
> I've seen a variety of discussions over the months concerning people wanting
> to tie mono to a remote mrtg database, etc. etc.
> 
> So far my searched turned up a lot of general discussion, but I can't find
> exactly what I need - hoping someone has implemented this already and can
> provide a few pointers.
> 
> I've got a client that wants to know who's using the bandwidth. Because of
> DHCP clients, they need to know the IP and are hoping to record the MAC.
> Total usage might be enough, ideally, something like MRTG / RTG on both an
> aggregate and per client basis would be ideal.
> 
> Did I miss it - has it been done?
> 

Not done yet, nor in great shape, but here's what we have. 
http://m0n0.ch/wall/docbook/faq-per-ip-monitoring.html

-Chris