RE: Source address of DNS-Server

Jon Nowell ( JNOWELL@dialnet.co.uk )
Fri, 13 Nov 1998 16:31:29 -0000

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Hi

I take it that when you say Win Nt 4.0 DNS you mean the Microsoft DNS
Server ??

Well assuming that what we have found is that the DNS uses the default
i.e original ip address of the box and does not Bind to the new
addresses (in fact it reports this in the event log on startup)

so I guess you need to ensure the default ip is the you need and
failing have a look at the bindings as they can get screwed up with
Wiindows NT :-(

Regds

Jon

----------
From: Lutz Lang[SMTP:llang@sbsd.de]
Sent: Friday, November 13, 1998 4:27 PM
To: 'ntisp@iea-software.com'
Subject: Source address of DNS-Server

Hi!

We have 2 WinNT4.0 DNS-Servers in our LAN in different Class-C
networks.
The one in net1 is our primary NS (let's say 192.168.1.40 or A), and
the
one in net2 is our secondary NS (192.168.2.129 or B). Both are
installed
in the same physical network.
We installed a webserver software on B, and assigned a few IP's to the
same NIC which we took from net1 (eg. 192.168.1.213). That worked for
a
long, long time without any errors.

Some days ago I added another IP of net1 to that machine, and since
then
the secondary DNS was not able to receive zones from the primary DNS.

I soon found what is going on when B requests zonedata from its
primary
master. As A isn't in the same IP-Net as B, B asks its Gateway
(Router)
for a destination. It then finds out that destination A is in the same
physical network and chooses the direct path. OK so far. But now B
uses
the first entry of its IP's which are in net1 as source adress! Now A
can't recognize B anymore as a valid secondary and won't transfer any
zonedata.

So my final question is:
Does anyone know how to tell NT to use one specific IP (namely
192.168.2.129) for those DNS-packets?

Regards,
Lutz Lang

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