I'd guess you'll get a more accurate answer on the lists/forums related to the virtualization software you're using. This doesn't really have anything to do with the ESB, never mind that quickstart.
The default binding address for the server is 127.0.0.1. You need to start it with the -b command.
Thank you Kevin!!
I just had to start my server with -b <IP Address> and the problem is solved :))