[dns-operations] Reverse Lookup speedup

Michael Monnerie michael.monnerie at it-management.at
Thu Aug 2 08:50:51 UTC 2007


On Donnerstag, 2. August 2007 Lutz Donnerhacke wrote:
> I can tell you, that the in-addr.arpa and
> ip6.arpa entries are cached on the recursive name servers, so that
> there is no performance benefit in slaving those zones.

This is for sure valid for a running bind, but after a restart all 
caches are emptied, right? We're currently in a big reconfiguration, so 
bind restarts happen more often than I would want. Having 
the .in-addr.arpa zone locally saves at least the 1st level lookups, 
thus helping after a restart, or isn't that worth the simple zone copy?

mfg zmi
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