KAME project

The KAME project, a sub-project of the WIDE Project, was a joint effort of six organizations in Japan that aimed to provide a free IPv6 and IPsec protocol stack implementation for variants of the BSD Unix computer operating-system. The project began in 1998, and on November 7, 2005, it was announced that it would be finished at the end of March 2006. The name KAME is a short version of Karigome, the location of the project's offices beside Keio University SFC.
KAME Project's code is based on the "WIDE Hydrangea" IPv6/IPsec stack by WIDE Project.
The following organizations participated in the project:

FreeBSD, NetBSD and DragonFly BSD integrated IPsec and IPv6 code from the KAME project; OpenBSD integrated just IPv6 code rather than both. Linux also integrated code from the project in its native IPsec implementation.
The KAME project collaborated with the TAHI Project, the USAGI Project and the WIDE Project.

Racoon

racoon, KAME's user-space daemon, handles Internet Key Exchange. In Linux systems, it forms part of the ipsec-tools package.