USAGI(UniverSAl playGround for Ipv6) Project works to deliver the production quality IPv6 and IPsec(for both IPv4 and IPv6) protocol stack for the Linux system, tightly collaborating with WIDE Project, KAME Project and TAHI Project. USAGI Project is run by volunteers from various organizations. At this moment, the volunteers are from Japan, however, we are glad to work with volunteers in any country in the world. We want to contribute to the Linux community and to the IPv6 community via the delivery of IPv6 protocol stack.