Enable IPv6 on your Wan is the first step in this process:
Goto you ‘Interfaces’ -> ‘WAN’
Select for your IPv6 configuration ‘ DHCP6’
in the ‘DHCP6 Client Configuration’ select ’56’ for the ‘DHCPv6 Prefix Delegation size’
Select ‘Do not allow PD/Address release‘. This should prevent that the Prefix is changed after reboot.
You should be able to receive a IPv6 address on the WAN connection.
Check your ‘Status’ -> ‘Interfaces’
you should see an IPv6 and IPv6 link local address
Now for the your LAN interface configure ‘Track Interface’
Configure the Router Advertisment:
(I’m running ‘Assisted’ because I need some static ip’s in the IPv6 range) -> most people should select “Stateless DHCP” here.
Next we need to add a Firewall rule for it to start working:
(on your firewall rules on the WAN connection add:
You should see the IPv6 activated on your LAN and devices connected to your LAN
Optional ( But Recommend for IPv6 ):
To get a 20/20 score on https://ipv6-test.com add the following Firewall rule on the WAN