hi all
I have VPN Server on my Windows Server 2012R2
and it assign ipv6 ( tunnelbroker ) to clients
it works fine and route all ipv6 traffic throw 6to4Tunnel
but problem is
1- after reboot
2- after few hours inactivity
VPN clients wont able to route any ipv6 traffic throw the VPN
so I must delete 6to4 tunnel and create it again to make it work again
netsh interface ipv6 delete interface IP6Tunnel
As for #2, that's often a firewall issue. An easy way to fix is to run a ping script every hour or so