Chapter 11 IPsec VPN for FortiOS 5.0 : IPv6 Configuration : IPv6 address groups
  
IPv6 address groups
To create IPv6 address groups from existing IPv6 addresses - web-based manager
Your company has 3 internal servers with IPv6 addresses that it would like to group together for the purposes of a number of policies.
The preconfigured addresses to use will consist of:
Web_Server-1
Web_Server-2
Web_Server-3
Go to Firewall Objects > Address > Groups and select Create New > IPv6 Address Group.
Fill out the fields with the following information
Group Name
Web_Server_Cluster
Members
Web_Server-1
Web_Server-2
Web_Server-3
Select OK.
To create IPv6 address groups from existing IPv6 addresses - CLI
config firewall addrgrp6
edit Web_Server_Cluster
set member Web_Server-1 Web_Server-2 Web_Server-3
end
To verify that the addresses were added correctly:
Go to Firewall Objects > Address > Groups. Check that the addresses have been added to the address list and that they are correct.
From the CLI, enter the following commands:
config firewall addgrp6
edit <the name of the address that you wish to verify>
Show full-configuration