Thank for your reply, i have to give you more details.
I want to use the /48 subnet to make my own site available in ipv6.
My fix IP is: 194.29.26.162. If i activate 6to4, the i get 2002:c21d:1aa2::1 /48. Now is my Astaro interface available under: https://[2002:c21d:1aa2::1]:4444
Thank for your reply, i have to give you more details.
I want to use the /48 subnet to make my own site available in ipv6.
My fix IP is: 194.29.26.162. If i activate 6to4, the i get 2002:c21d:1aa2::1 /48. Now is my Astaro interface available under: https://[2002:c21d:1aa2::1]:4444