[87330] in North American Network Operators' Group
RE: Gothcas of changing the IP Address of an Authoritative DNS Server
daemon@ATHENA.MIT.EDU (Ejay Hire)
Wed Dec 14 14:17:21 2005
From: "Ejay Hire" <ejay.hire@isdn.net>
To: "'Eric Kagan'" <ekagan@axsne.com>, <nanog@merit.edu>
Date: Wed, 14 Dec 2005 13:15:42 -0600
In-Reply-To: <03c901c60026$20232810$660da8c0@axsdom.local>
Errors-To: owner-nanog@merit.edu
assuming you've got the old box and the new one running
concurrently, you could run tcpdump on the old box with a
filter to only catch dns requests to the old ip. Let it run
for 24-48 hours and you could see who/what was still
querying the old ip.
-e
> -----Original Message-----
> From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu]
On
> Behalf Of Eric Kagan
> Sent: Tuesday, December 13, 2005 2:45 PM
> To: nanog@merit.edu
> Subject: Gothcas of changing the IP Address of an
> Authoritative DNS Server
>
> We need to move our Primary DNS server from legacy IP
space
> provided by our upstreams to our ARIN Assigned IP space.
I
> am looking for advice and any gotchas. I couldn't find
any
> white papers to this affect or archived articles or
postings.
> If someone does have a resource for this or find this
could
> be valuable, I can certainly gather all the info and
document
> it. Most of the Registrars I have seen now use the
> Authoritative DNS Server Host names for the domain name
> registrations vs the IP Address. For most of our
customers,
> we register and host the DNS. I have confirmed almost all
> the customers have either Network Solutions, Tucows, Go
Daddy
> and Register.com.
>
> Can I simply change the IP address of our DNS server and
> update the DNS Host Record with our registrar with the new
IP
> and any A / NS records we have ? As long as other
customers
> domains have our DNS Server FQDN as the Host, they should
not
> need to make any changes, correct ? I would love to
think
> its that simple, but there is always a gotcha. Does
anyone
> know of any main registries using just the IP Address
where
> the customer might need to go in and make those changes
for
> each and every domain ? Any input, advice or ideas is
appreciated.
>
> Thanks
> Eric
>
>
