Gothcas of changing the IP Address of an Authoritative DNS Server
Gregory Hicks
ghicks at cadence.com
Wed Dec 14 19:21:34 UTC 2005
> From: "Ejay Hire" <ejay.hire at isdn.net>
> To: "'Eric Kagan'" <ekagan at axsne.com>, <nanog at merit.edu>
> Subject: RE: Gothcas of changing the IP Address of an Authoritative DNS Server
> Date: Wed, 14 Dec 2005 13:15:42 -0600
>
>
> 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.
This topic comes up frequently on bind-users at isc.org ...
Might query there but many of these responses have covered much of what is
discussed there.
Regards,
Gregory Hicks
>
> -e
>
> > -----Original Message-----
> > From: owner-nanog at merit.edu [mailto:owner-nanog at merit.edu]
> On
> > Behalf Of Eric Kagan
> > Sent: Tuesday, December 13, 2005 2:45 PM
> > To: nanog at 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
> >
> >
>
-------------------------------------------------------------------
Gregory Hicks | Principal Systems Engineer
Cadence Design Systems | Direct: 408.576.3609
555 River Oaks Pkwy M/S 6B1 | Fax: 408.894.3400
San Jose, CA 95134 | Internet: ghicks at cadence.com
I am perfectly capable of learning from my mistakes. I will surely
learn a great deal today.
"A democracy is a sheep and two wolves deciding on what to have for
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