Comcast Business Static IPv6 and pfSense

Hello,
I have a static IPv6 block from Comcast business and I need to make it work on pfSense. I am reading conflicting things on how to set this up:


Comcast has given me this info:
IPv6 Prefix Delegation: 2603:XXXX:XXXX:6000::/56
That’s it.

Some are saying to use DHCP6 on the WAN Interface, but that’s not worked for me.
Don’t want to overload with detail just yet, so please request info as needed.

Does anyone have static IPv6 working with Comcast Business + pfSense who cares to share their config? Thank you!!