Microsoft Windows XP [Version 5.1.2600] (C) Copyright 1986-2001 Microsoft Corp. C:\WINDOWS>netsh interface portproxy delete v6tov6 ?
Usage: delete v6tov6 [listenport=]|[[listenaddress=]|][[protocol=]tcp]
Parameters:
Tag Value
listenport - IPv6 port on which to listen.
listenaddress - IPv6 address on which to listen.
protocol - Protocol to use. Currently only TCP is supported.
Remarks: Deletes an entry to listen on for IPv6 and proxy connect to via IPv6.