netsh interface ipv6 add v6v4tunnel IP6Tunnel 10.0.1.1 209.51.181.2
netsh interface ipv6 add address IP6Tunnel 2001:470:1f10:1b2::2
netsh interface ipv6 add route ::/0 IP6Tunnel 2001:470:1f10:1b2::1
above shows end point @ router , router quasi supports IPV6 , (DHCP6 wanted in AP extreem )
in times past I added the old config above but with external IP
anyhow now extricating it to replace the tunnel ... seems to die ,
AP exteem can dynmicly setup tunnels manual add tunnel , then auto , but never updates the HE side. when the isp ip changes.
I'm not sure what you're asking for help with