Re: Source address of DNS-Server

Charles Keledjian ( (no email) )
Fri, 13 Nov 1998 18:07:33 -0400

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----- Original Message -----
From: Lutz Lang <llang@sbsd.de>
To: <ntisp@iea-software.com>
Sent: Friday, November 13, 1998 12:16 PM
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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