How to close ipv6 under Wind7

Use commands as follows to close ipv6 under Win7

netsh interface teredo set state disable

netsh interface 6to4 set state disabled

netsh interface isatap set state disabled

Use commands as follows to reuse ipv6 under Win7 

netsh interface teredo set state default

netsh interface 6to4 set state default

netsh interface isatap set state default

Note, if you are given the warning that Administrator permissions are needed, you should find cmd.exe and " Run as Administrator".