Hi,
I think I might have found a slight issue in the new Hosting domain setup UI. I'm migrating a .co.uk MU install over but I don't get the right information on the Setup DNS screen. If I enter the domain.co.uk domain, I get…
Add Domain
Create a CNAME for your subdomain pointing to xxxxxxxxx.wpmudev.host.
…which of course isn't possible on the apex/root domain. If I change the domain to domain.com I get…
Add Domain
If your DNS provider supports an Alias/ANAME record point your domain to xxxxxxxxx.wpmudev.host, otherwise you may create an A record pointing to 0.0.0.0 (and optionally an AAAA record for ::0 for IPv6 support).
…which is the right answer for an apex/root domain.
Mark