forward reverse lookups

[JINMEI Tatuya / 神明達哉]

At Fri, 7 Nov 2008 07:18:27 -0800 (PST),
paulpsmith <mr.paul.psmith at gmail.com> wrote:

> I'm fairly new to BIND, but have a pretty good understanding of DNS
> and other protocols. I have been trying to make something work for
> about a week now and can't figure it out. Is it possible to have a
> cache only nameserver forward reverse lookups to a primary server for
> those zones?
> 
> This is for internal only.
> 
> I have an OBSD 4.4 syslog server. i got named running on it locally as
> a cache only name server. The syslog messages come in and get logged
> with the src IP address of the host sending the message. I want the
> fqdn of the device for easier reading. If I put the name/IP in a hosts
> file, it shows the name. If I have the server do lookups to the
> primary servers, I get a name.
> 
> My problem is that if I have it just look up to the primary, it is up
> to 50/100 lookups per second to the primary servers. i don't want to
> put that load on them.
> 
> Anyone have an idea? I've tried putting the zone statements for the
> subnets in as forward zones in the named.conf, but that does not seem
> to help.

If I understand you correctly, this should be possible.  But if you
can provide more details including network configuration and your
named.conf that didn't work, we could provide more useful and specific
advice.

---
JINMEI, Tatuya
Internet Systems Consortium, Inc.