Unfortunately, disabling IPv4 is not a viable option, unless you run IPv4 literal address translation layer (464XLAT on the server side and CLAT on the clients). Many sites still do not support IPv6, which is a great shame, but slowly but surely we’re getting there.

I tried 464XLAT on my home network, for the most part it worked flawlessy, aside from some IoT devices that don’t support v6 at all or are not LAT aware. So dual stack it is.