second nameserver with two IPs

[Lightner, Jeff]

You can have a thousand IPs and it won't matter so long as you configure your named.conf to use a specific IP in notify-source and transfer-source.

-----Original Message-----
From: bind-users-bounces+jlightner=water.com at lists.isc.org [mailto:bind-users-bounces+jlightner=water.com at lists.isc.org] On Behalf Of Jonathan Stewart
Sent: Wednesday, June 08, 2011 11:00 AM
To: Jeff Peng
Cc: bind-users at lists.isc.org
Subject: Re: second nameserver with two IPs

On Tue, Jun 7, 2011 at 20:37, Jeff Peng <pengyh at inbox.com> wrote:
> Hello,
>
> My second nameserver has tow IPs, for example,
>
> 61.144.56.1
> 61.144.57.1
> (They are in different CIDRs.)
>
> and my ns2.example.com was pointed to these two IPs.
>
> Will this cause problems, for example, the duplicated notification or zone-transfer?

I would expect duplicate notifications, but that's not any problem at all.

The zone would transfer once, because a serial number check is always
done before the transfer.  If a second notification was received, a
second serial number check (via SOA record) would be done, and, when
it found the same serial number, BIND would not transfer same zone a
second time.

As Torinthiel said though: try it out, and watch your logs to see
happens specifically.

-- 
     Jonathan
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