Connecting multiple BBB to a PC using USB

Hi all,
I’m just getting my feet wet with using BBB. So, please, excuse me if this question is in FAQ some where… I’m trying to connect multiple BBB to a windows PC using USB cables and I’m not sure how to do it properly. When I plug in multiple BBBs to a PC, multiple external drive is detected (OK) and multiple RNDIS is shown in Network Connections (OK). However, the second BBB does not get proper IP (not OK!!!). So, I can’t communicate with my application that is running in the second BBB. Is there a way to get multiple BBS to talk to a PC using USB connection?

We are planning to create embedded controller based on AM335x/BBB and being able to connect multiple controller to a PS is a requirement.

Thank you for any help.