[87279] in North American Network Operators' Group
Re: Gothcas of changing the IP Address of an Authoritative DNS Server
daemon@ATHENA.MIT.EDU (Steven M. Bellovin)
Tue Dec 13 16:30:11 2005
From: "Steven M. Bellovin" <smb@cs.columbia.edu>
To: Sam Crooks <anti.confidentiality.notices@gmail.com>
Cc: Eric Kagan <ekagan@axsne.com>, nanog@merit.edu,
nanog-post@merit.edu
In-Reply-To: (Your message of "Tue, 13 Dec 2005 14:12:17 MST.")
<9828b780512131312q220a5ea6x97a6167e33c654a0@mail.gmail.com>
Date: Tue, 13 Dec 2005 16:28:59 -0500
Errors-To: owner-nanog@merit.edu
In message <9828b780512131312q220a5ea6x97a6167e33c654a0@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
