Het is gelukt! Qua IPv6 zijn we nu ook overgestapt. Het is uiteindelijk vooral gelukt met de configuratie zoals 'ie hier is terug te vinden: http://networkdynamics.nl/?p=1
Mijn (relevante) configuratie is nu als volgt:
config system interface
edit "wan2"
set vdom "root"
set ip 192.168.1.10 255.255.255.0
set allowaccess ping
set type physical
set alias "draytek"
set lldp-transmission disable
set role wan
set snmp-index 3
set mtu-override enable
set mtu 1514
next
end
config system interface
edit "freedom-inet"
set vdom "root"
set allowaccess ping
set estimated-upstream-bandwidth 34000
set estimated-downstream-bandwidth 112000
set role wan
set snmp-index 8
set mtu-override enable
set mtu 1506
set interface "wan2"
set vlanid 6
next
end
config system interface
edit "pppoe1"
set vdom "root"
set mode pppoe
set allowaccess ping
set type tunnel
set estimated-upstream-bandwidth 34000
set estimated-downstream-bandwidth 112000
set snmp-index 9
config ipv6
set ip6-mode dhcp
set ip6-allowaccess ping
set dhcp6-prefix-delegation enable
end
set interface "freedom-inet"
next
end
config system interface
edit "internal"
set vdom "root"
set ip x.x.x.x 255.255.255.0
set allowaccess ping https ssh snmp http
set type hard-switch
set role lan
set snmp-index 6
config ipv6
set ip6-mode delegated
set ip6-allowaccess ping
set dhcp6-prefix-delegation enable
set ip6-send-adv enable
set ip6-manage-flag enable
set ip6-other-flag enable
set ip6-upstream-interface "pppoe1"
set ip6-subnet aaaa:bbbb:cccc:dddd::/64
config ip6-delegated-prefix-list
edit 1
set upstream-interface "pppoe1"
set autonomous-flag enable
set subnet aaaa:bbbb:cccc:dddd::/64
next
end
end
set mtu-override enable
next
end
config system pppoe-interface
edit "pppoe1"
set ipv6 enable
set device "freedom-inet"
next
end
config router static6
edit 1
set device "pppoe1"
next
end
config system dhcp6 server
edit 1
set rapid-commit enable
set dns-service default
set subnet aaaa:bbbb:cccc:dddd::/64
set interface "internal"
set upstream-interface "pppoe1"
set ip-mode delegated
next
end
aaaa:bbbb:cccc:dddd::/64 bij de set subnet parameter zijn de eerste drie digits van het ipv6 subnet dat door Freedom is toegewezen (de /48), plus een vierde digit (dddd) dat ik gebruik om mijn lokale LAN netwerk aan te duiden.
Problem solved!