Interesting...unfortunately I think I fall into the same problem you did. Ah well, something to think about for other projects I suppose. Thanks, Josh -- A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools. -Douglas Adams Dale Botkin wrote: > > Yep. Now on its way to its new owner. Like I said, it's not perfect for > every application -- in my particular case, I needed something that would > enable me to asynchronously send UDP packets over large IP networks. The > show stopper was the IP stack -- it's designed as a web server that has a > lot of interfacing ability. One thing they did that's pretty interesting > is to eliminate the need for a default gateway and ARP protocol -- the SP > simply sends all reply packets to the same IP and MAC address from which > the request was received. Note that this means if you didn't receive a > request, you've got a problem. Works fine for a web server, but in my > case I wanted to be able to send a UDP packet to a known IP address. > There is a way to do it but it requires that you know the IP *and MAC* > address of the target host. As this was going to be a commercial product, > making the user enter the MAC address of the gateway or host was really > not acceptable. I needed ARP at least, so it wouldn't work for my > particular application. For many remote control/status applications, > though, it would be fine. -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.