I'm writing network software and would like to test it under adverse network conditions. Is there a netfilter module that can simulate slow, sticky, and downright errant network conditions over loopback with RH Linux 2.4.9-13? Mike -- A program should be written to model the concepts of the task it performs rather than the physical world or a process because this maximizes the potential for it to be applied to tasks that are conceptually similar and, more important, to tasks that have not yet been conceived.