root and in-addr.arpa zone transfers
Michael Monnerie
michael.monnerie at is.it-management.at
Mon Sep 14 10:40:08 UTC 2009
On Montag 14 September 2009 Stephane Bortzmeyer wrote:
> > Faster queries after a named restart. Reverse lookups faster too,
> > good for the spam filters.
>
> Did you measure it or is it, like most claims "X is faster", just a
> guess?
In normal Setup, we see lots of querie to the 3rd DNS entry in
resolv.conf for quite some time after a restart.
With root/arpa copies local, even after a restart very quick
normalisation occurs.
I wouldn't recommend doing the slaving if you have to start new, but we
already have the infrastructure/scripts running and tested, so I'll just
keep it. We had no negative side effects so far. While it's a small
gain, keeping it doesn't hurt, so: I won't touch the running system.
mfg zmi
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