Obtaining IPv6 addresses from an IPv6 DHCP server
From the CLI, you can configure any FortiGate interface to get an IPv6 address from an IPv6 DHCP server. For example, to configure the wan2 interface to get an IPv6 address from an IPv6 DHCP server enter the following command:
config system interface edit wan2 config ipv6 set ip6-mode dhcp
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