hello, Quiet a few people have asked this question - but I fond no answer in the ns-users archives. If I try using Pareto/Exponential Traffic in a Wireless environment - I get the following error (null) - invalid packet type (exp). For wired nodes, it works fine. But if I add a Expo/Pareto traffic model to any wireless simulation, I get the above error. Does anyone know a way around this? Regards, Richa.