Subject: Re: Should a nameserver know about itself?

From: "D. J. Bernstein" <[email-masked]>
Date: 31 May 2001 17:25:18 -0000

Shane Kerr writes:
> one of nominum.com's name servers is ns-ext.vix.com

.com doesn't allow two server names to point to the same IP address.
Section 3.4.2 of draft-ietf-provreg-grrp-reqs-02.txt corrects this flaw.

> every time they buy a smaller ISP they're going to have to worry
> about not only integrating the different infrastructure into their
> own, but also now changing a set of records in one or more RIR
> databases to use their preferred name servers.

Why do you think this is a disadvantage for in-zone server names? Here's
the situation:

                   Current system            In-zone server names
                   ------------------------  -----------------------------
   Old delegation  1.i-a.arpa NS a.ns.x.net  1.i-a.arpa NS a.ns.1.i-a.arpa
                                             a.ns.1.i-a.arpa A 4.3.2.1

   New delegation  1.i-a.arpa NS a.ns.y.net  1.i-a.arpa NS a.ns.1.i-a.arpa
                                             a.ns.1.i-a.arpa A 9.8.7.6

In both systems, the delegation has to be changed.

---Dan

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

On Thu, May 31, 2001 at 12:29:09PM +0200, Shane Kerr wrote:
> True, they won't have to update
> the information very often once correct, but every time they buy a
> smaller ISP they're going to have to worry about not only integrating
> the different infrastructure into their own, but also now changing a set
> of records in one or more RIR databases to use their preferred name
> servers.

True; but it's their choice. I don't think anybody's suggesting ISPs
must do it. If I choose to use such a naming scheme for my delegations
then it's up to me to make sure it works. The problem now is that even 
though it's perfectly legal and reasonable there are RIRs that won't let 
me do it.

> Does anyone who administers a lot of IP space have strong feelings on
> this issue?

Yes; if there is any RIR that can't/won't put glue A records into
IN-ADDR.ARPA zones in cases where such glue should be there (thereby
preventing the use of in-zone nameservers for the NS records) that
constitutes a problem that needs to be fixed. Whether or not DNS
administrators choose to use such a naming/delegation scheme is entirely
irrelevant.

Regards,
james
-- 
James Raftery (JBR54)
  "It's somewhere in the Red Hat district"  --  A network engineer's
   freudian slip when talking about Amsterdam's nightlife at RIPE 38.

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

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From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

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From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

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From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

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From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

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From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

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From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

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From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

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From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

---

From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james

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From: James Raftery <[email-masked]>
Date: Thu, 31 May 2001 17:01:31 +0100

Regards,
james