Where is MS's IPv6 stack

Haisang Wu hswu@ns.6test.edu.cn
Wed, 29 Mar 2000 22:02:41 +0800 (CST) 

Hi, friends:
  I heard that MSR has developed IPv6 stack for win2000 and winNT4.0.
  who can give me an URL to download?
  Thanks.
     wood