// chaos begin 😉
ipv6 install

// check index of interface
ipv6 if

// change default prefix ( WAN = Local Area Network by default )
netsh interface ipv6 set interface „WAN” siteprefixlength=54

// set ipv6 address ( 8 its interface index )
ipv6 -p adu 8/2001:41d0:b:110::1

// set default route
netsh interface ipv6 add route ::/0 „WAN” 2001:41d0:b:1ff:ff:ff:ff:ff