How to disable IPv6 through cmd script

I don't want to manually uncheck the IPv6 checkbox in network coection.

I want to make a cmd logon script to disable IPv6 for a dozen of computers.

I have tried:

netsh interface teredo set state disable
netsh interface 6to4 set state disabled
netsh interface isatap set state disabled

But, it is not working.

On the other hand, I want to create a cmd script to disable the proxy setting in browser also.