I (Mark Spencer) am the primary author of this work.  However, I would like to thank the following people for their contributions:

* Peter Brackett, Adtran, for supporting the creation of this free software

* Alan Cox, RedHat, for architectural suggestions and moral support :)

* Kyle Farnsworth, Adtran, for helping me get started and for providing me with the Adtran LAC for initial testing

* Ashish Lal, Midnight Networks, for thorughly evaluating compliance of l2tpd to the published l2tp specification

* Rich Martin, Deltacom, for loaning me a Cisco 3000 router for interoperability testing

* Kevin Schneider, Adtran, for initially pointing me in the direction of doing l2tp support for Linux

* Mark Townsley, Cisco Systems, for helping answer a variety of questions (particularly relating to authentication) and for aiding
  with interoperability testing with Cisco l2tp software.

The MD5 code was written by Colin Plumb, and is without copyright (public domain).

This project was forked January 12, 2001 by Scott Balmos and David Stipp due to the apparent inactivity of the project.
We also would like to thank the following people who helped us after the fork:

* Jeff McAdams, IgLou Internet Services, for being our own Alan Cox clone.

* Huiban Yoann, Siemens, for some scaleability improvements.

* Jens Zerbst, for initial implementation of a rudimentary Outgoing Call Request system

* Everyone out there who have submitted an uncountable amount of little bug fixes. Thanks all!!!