http://netbsd.i2p/docs/guide/en/ap-ack.html
In addition, special thanks go to (in alphabetical order): Hubert Feyrer, for getting the guide up to speed for
NetBSD 2.0, and for making numerous improvements to all
chapters. Jason R. Fink, for maintaining this document and integrating
changes. Joel Knight for the Chapter 28, Introduction to the Common Address Redundancy Protocol (CARP) .