So... I have dual WAN connections (ATT FTTH, XFinity), and both of them offer native ipv6.
On the att wan interface i am using dhcpv6 and it gets the address. One the xfinity interface, it is unable to acquire the ipv6 prefix... but... if I disable the ATT wan, then remove and readd the dhcpv6 to the Xfinity, it works...
Is this a known limitation/bug in the current firmwares? I failed to try it with the 1.3.0 firmware that came on the device, but I did try it on 1.8.0 before upgrading and similar behavior occurred.
Just curious if anyone else has made an observation similar to this in a dual dual stack environment.