IPV6 address not recognized

[Morgan FORGES]

Hello,

I have a new server plesk 11.0.9 Update # 43, the server has an address ipv4 ipv6 and address on eth0, unfortunately plesk IPv6 address does not appear and I especially can not add probably because it already exists. error message when I try to add: The specified IP address can not be used on the network interface. You must specify a valid IP address with the mask or range of subnet prefix.

Thank you for your help

 

[GravuTrad]

You insert it surely badly. How did you write it?