by
smjones » Wed Feb 01, 2017 11:35 pm
I recently upgraded to Fusion DSL X2, and noticed the same thing in the 5268AC that was shipped to me last week. In that case the firmware ended in (I think) ...287-sonic. I called support today, and after making me do a factory reset they allowed as how, yes, perhaps what you're seeing is not a hallucination and something was changed in the more recent firmware...
They pushed ...153-sonic down to the Pace box, and after a restart I had the IPv6 options.
If you receive a 5268AC in the next couple weeks and don't see what you expect for IPv6 options, be sure to check your firmware version against what's in this thread. There's probably an inventory to go through before Pace or whoever pre-loads the Sonic-specific firmware will be using a corrected version.