Emulating a cellular interface

Greetings NANOGers A friend of mine is doing some testing where he wishes to emulate a cellular-like interfaces with random drops and all, out of an ethernet interface. Since we have plenty of network and system ops on the list, I thought we might have luck posting the question here. Is anyone aware of a simple tool to do this, other than rather involved configuration of iptables? Thanks and best regards -- Muhammad Saqib Ilyas PhD Student, Computer Science and Engineering Lahore University of Management Sciences