Copyright © 1994 Holger Kruse. All rights reserved.

PPP.device is mostly my own original work. However some
parts of it are based on previous work by others. Here are
the corresponding copyright notes:

The SLIP example SANA-2 device Rev 2.0 is Copyright (c) by
Commodore. An earlier SANA-2 device version was modified
by Olaf Seibert. Those modifications are Copyright (c) by
Olaf Seibert.

The TCP compression example code in Appendix A of RFC 1144 is
Copyright (c) 1989 Regents of the University of California.
All rights reserved.

The NetBSD SLIP driver is Copyright (c) 1989 Regents of the
University of California. All rights reserved.