Configure FortiGate A routing
This simple example requires just two static routes. Traffic to the protected network behind FortiGate B is routed via the virtual IPsec interface toB. A default route sends all IPv6 traffic out on port2.
config router static6
edit 1
set device port2
set dst 0::/0
next
edit 2
set device toB
set dst fec0:0000:0000:0004::/64
end