[Pierre-Marie Baty]

I think you would have more chances of getting an explanation on usenet, in the developer groups who make use of BSD. Try "comp.os.bsd" or something like that.

AFAIK, BSD can use Unix domain sockets (POSIX) just like Linux ; the main difference is that it's the standard TCP socket method for Linux whereas BSD uses a BSD-specific socket layer, more robust and efficient. But the UNIX domain sockets do work fine too, so I think if it crashes with BSD and not with Linux it might rather be a problem with the Linux emulation... else you've done something really wrong, but I'm not a guru in these matters.