a bit late, but...
I think the easiest way to do this is to create a few Map Data rules, like this:
Screens that I didn't capture can be left as they are. Like this you can create a second rule that uses Number = 2, etc etc. The suffix is put after the mapped NIC address to separate them, but you can choose anything you like, of course.
Hi, Frank. This is very much how I "solved" this problem. I created a Network > NIC0 through NIC4 attribute tree, with its own MAC and IP attributes. I add these to the standard Column Set that analysts use, so they can find the MAC in question.