Would really like an update on this. @RogersIan
I've been patiently watching this thread, and forcing IPv4, but I will have to cancel my service if this setting does not return soon. Removing this setting amounts to removing my privacy as I have no control who sees my lookups now.
I shouldn't have to jump through hoops by manually configuring each of my devices, or setup my own DHCP/DNS router, for such a basic function.