Microsoft Windows [Version 6.0.6001] (C) Copyright 2006 Microsoft Corp. c:\windows>netsh interface portproxy delete v4tov6 ?
Usage: delete v4tov6 [listenport=]|[[listenaddress=]|][[protocol=]tcp]
Parameters:
Tag Value
listenport - IPv4 port on which to listen.
listenaddress - IPv4 address on which to listen.
protocol - Protocol to use. Currently only TCP is supported.
Remarks: Deletes an entry to listen on for IPv4 and proxy connect to via IPv6.