On Tue, Apr 19, 2005 at 05:51:11PM -0400, Tom Buskey wrote: > I wonder if there are any TCP stacks that are not derived from BSD. > (SCO maybe??? ;-) The Mentat TCP/IP stack (which is STREAMS-focused) is used in a number of different environments, including HP-UX 11i, and a version is in Sun. It's a complete rewrite from scratch, without any BSD code. -- Bob