Gothcas of changing the IP Address of an Authoritative DNS Server

Tue Dec 13 21:28:59 UTC 2005

In message <9828b780512131312q220a5ea6x97a6167e33c654a0 at mail.gmail.com>, Sam Cr
ooks writes:
>
>I would think you would want to drop your DNS record TTLs for all
>domains being moved to something very low several days before the
>switch-over period.

More precisely, you want to change the TTL on the NS records, which are 
in the parent zone.  If you're keeping the name but changing the 
address, worry about the A records, too.

		--Steven M. Bellovin, http://www.cs.columbia.edu/~smb