- Under interfaces click on WAN. Select DHCP6 from drop down menu on IPv6 configuration type. Make sure DHCPv6 Prefix Delegation size is set to 64. Uncheck Block bogon networks. Click Save.
- Under interfaces click on LAN. Select Track interface from drop down menu on IPv6 configuration type. Make sure Track interface is set to WAN under Track IPv6 Interface. Click Save.
That's it. You should see on your pfSense dashboard that the WAN and LAN interfaces each have an IPv6 Time Warner IP address. Release/renew DHCP IP addresses on your LAN devices and they should now pick up IPv6 Time Warner IP addresses.