Uitschakelen Windows tunnel interfaces
https://www.asmus-consulting.com/en/blog-category-active-directory-and-windows-server/item/41-disable-ipv6-tunnel-adapter
Use these 3 lines to disable the Adapters by netsh:
| 1 | netsh int ipv6 isatap setstate disabled | 
| 2 | netsh int ipv6 6to4 setstate disabled | 
| 3 | netsh interface teredo setstate disable | 
You can also disable Tunnel Adapters by GPO
– open Group Policy Management Editor
– select an existing or create a new GPO
– Computer Configuration -> Administrative Templates -> Network -> TCPIP Settings -> IPv6 Transition Technologies
Configure all of the Settings below – enable the Setting but select “disable” within.
– “Set 6to4 State”
– “Set ISATAP State”
– “Set Teredo State”
thats it