Implementation History in Fujitsu Labs.
implemented the prototype on Solaris IPv6 in Aug., 1996
first introduced the idea at NGTRANS in Dec., 1997
http://www.ietf.org/proceedings/97dec/97dec-final-73.htm
distributes an implementation since Jul., 1998
ftp://ftp.kame.net/pub/kame/misc/socks64-v10r3-980623.tgz
Internet-Draft in Nov., 1998
ftp://ftp.ietf.org/internet-drafts/draft-jinzaki-socks64-00.txt