Does anyone have any code for a pseudo-network interface? That is, I'm looking for the analog to a pseudo-tty, where ``output'' from the device goes to a program, and input from it comes from the program. I'd like this for 4.3bsd or SunOS 4.0, but other versions are fine, too. --Steve Bellovin att!ulysses!smb, smb at ulysses.att.com