As you recall, I’ve been lamenting the lack of direct IPv6 via my local ISP (COX) since 2013.
It seems that some time in the past 3 months, they silently enabled IPv6 in my area! I was preparing to reconfigure my tunnel from tunnelbroker and decided to “just check”. Cox is now correctly(!) serving IPv6.
I was able to set my Apple Airport Extreme to “auto configure” for IPv6, and I’ve got proper addresses, routers and even DNS over IPv6.