Can't get WAN interface to pull IPv6 address or allocation

[sirianthe3rd]

Hi all, I'm trying to setup native dual-stack IPv6 with TWC cable. When I set the WAN interface to pull just a simple address, it won't do that. I looked in /var/log/dhcpd.log and see several entries in there for the IPv4 address being pulled via dhclient, but nothing for IPv6.

I did hook up my laptop to the modem to verify I could pull an address at the very least.

The TWC modem is on their supported list (Motorola MB7420). It looks like modem itself pulled an address for management purposes.

Any ideas? Ideally I would like to pull an allocation to use on my LAN.

PS- I am using HE.net's tunnelbroker to get an allocation that I am currently using now on the LAN, but I wanted to go native, if possible. Just seems like dhclient is having issues pulling the appropriate address.