Re: Gothcas of changing the IP Address of an Authoritative DNS Server

Joe Abley wrote:

You also want to check all the registries which are superordinate to zones your server is authoritative for, and check that any IP addresses stored in those registries for your nameserver are updated, otherwise you will experience either immediate or future glue madness.

I thought that would be only ONE registrar, hosting the ONE zone that contains the nameserver A record. Unless you are in the habit of having domains registered with their own nameserver glue and pointing it at the same IP address. Didnt registrars not allow that?