pfsense ipv6 with Telstra nbn

[StuRams]

Hello,

I have ipv6 set up on pfsense as per https://whirlpool.net.au/wiki/pfsense_ipv6_telstra.

After a reboot the ipv6 only stays up for 1 hour then it drops. The ipv6 gateway then says 100% packet loss for ipv6.

I have a Telstra Technicolor DJA0231 and am using pfSense box connected to the Arris box and the Telstra DJA0231 connected to the lan port of the pfsense box.
Wall Socket -> Arris -> pfsense -> Telstra Technicolor

Set up as per [https://crowdsupport.telstra.com.au/t5/home-broadband/pfsense-on-telstra-nbn/td-p/937468](link url)

What are the settings on pfsense to get ipv6 working? particularly the LAN, gateway and Router Advertisements settings please?

Also, I have read the post [https://forum.netgate.com/topic/140950/ipv6-native-with-telstra-australia?loggedin=true]