End users wouldn't need any special client software. There's no reason why a DNS server couldn't take care of the new protocol and just present resolved IP add

End users wouldn't need any special client software. There's no reason why a DNS server couldn't take care of the new protocol and just present resolved IP addresses to the client as usual. I don't imagine everyone would want this new DNS initially, but the key is that it's there if you want it, and no-one can stop that.