This program was initially developed by the KAME project. http://www.kame.net/ The project can be found on Github (among other places): http://github.com/kame/kame The original BSD-only source on which this project is based is located here: http://github.com/kame/kame/tree/master/kame/kame/rafixd The program was initially ported to GNU/Linux by Eric Vyncke (evyncke@cisco.com) in January 2008. It has since been updated by Gordon Stratton (gordon.stratton@gmail.com) to continue to build on modern GNU/Linux systems. There are now two makefiles: - Makefile: the original makefile - Makefile.linux: a modified makefile for GNU/Linux On a GNU/Linux system, you will use: make -f Makefile.linux and on BSD (maybe other?) systems, the usual 'make' should suffice.