Khachaturov, Vassilii Vassilii at icomverse.com
Tue Nov 9 09:04:43 UTC 1999

It's perfectly legal for the same IP to be a nameserver for several domains.

The setup you provided only lists glue records for the domain[a-c].com
domains. It doesn't show delegation records from .com -- hopefully you
understand it's the delegation that actually addresses a client to the right
nameserver, not the glue!

in-addr doesn't matter here.

FYI: only one nameserver is illegal by the DNS RFC.
You MUST provide at least two, which belong to different
* physical networks
* have different physical locations
* have no common link shared (e.g., satellite link to the backbone)
* have no electricity link shared (meltdown of one's power station doesn't
affect the other)
Also, at least one of the servers should not be inside its domain -- that
can be typically arranged with an ISP.

	Vassilii Khachaturov
Skribu al mi per Esperanto!

-----Original Message-----
From: Keith Hermansader [mailto:keith at hermansader.net]
Sent: Monday, November 08, 1999 8:50 AM
To: comp-protocols-dns-bind at moderators.isc.org
Subject: NS RR's

Will it work assigning multiple NS hostnames using a single IP address,
provided that A records are used?  Does it matter if the IN-ADDR
response is different?

Basically what I want to do is this:

domain a:

	NS	ns.domaina.com

ns	A

domain b:

	NS	ns.domainb.com

ns	A

domain c:

	NS	ns.domainc.com

ns	A

The in-addr lookup for would report host1234.domainx.net

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