Caching-only Name server does Zone Updates
Barry Margolin
barmar at alum.mit.edu
Tue Feb 3 06:05:06 UTC 2009
In article <gm8m0j$1u13$1 at sf1.isc.org>, "Ashish" <ashish.rao at wipro.com>
wrote:
> Hello All,
>
> Thank you for your replies.
>
> Our configuration file is fairly simple (I have changed the domain name for
> security).
>
> domain example.group.net
> cache . /etc/dnscache
>
> We use BIND 4.
BIND 4 is at least 15 years out of date, why are you still using it?
You're not likely to get any sympathy here.
> Actually our DNS was doing lot of CPU utilization and when we
> started it in Debug mode we found that there was a reverse lookup for some
> IP address which was in the dnscache file. (dnscache is the root hint file)
The only things that should be in the dnscache file are NS and A records
for the root servers. I have no idea if it uses any of the other
records.
--
Barry Margolin, barmar at alum.mit.edu
Arlington, MA
*** PLEASE don't copy me on replies, I'll read them in the group ***
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