Hi, I'd like to bandwidth limit some services coming from my Mac OS X machine, and the use of ipfw w/dummynet (http://info.iet.unipi.it/~luigi/ip_dummynet/) seemed like the easiest and most appropriate thing for my application. However, it would seem that dummynet is not supported in Darwin, despite the presence of a few header files throughout the system to the contrary. When trying to add a pipe and configure it I get the following error: ipfw: setsockopt(IP_DUMMYNET_CONFIGURE): Protocol not available So, my question: Is anyone working on a port? I gave a quick try from FreeBSD sources, but haven't had much luck. I think I'm missing things like ip_dummynet.c, bridge.c etc.... Also, while I've been able to recompile a working IPFirewall kernel extension, perhaps I need to be updating /sbin/ipfw as well? But where's the source? Can't seem to find an Apple version of it anywhere. Anyway, hope this finds a quick solution. Thanks! -Chris