root and in-addr.arpa zone transfers
marka at isc.org
Sat Sep 12 13:42:31 UTC 2009
In message <20090912082415.GA13105 at fantomas.sk>, Matus UHLAR - fantomas writes:
> > On Freitag 11 September 2009 Matus UHLAR - fantomas wrote:
> > > - it's quite useless to cache the .arpa and .in-addr.arpa since
> > > unlike other TLD's they are hierarchically organised so there won't
> > > be any valuable benefit from slaving them, only risks (see above).
> On 12.09.09 09:27, Michael Monnerie wrote:
> > Every other point is OK, but I don't understand this one. They are all
> > hierarchical, what's the difference with .in-addr.arpa?
> while there are many manual mistypes in root and other domains, there are (ne
> arly) no
> mistypes in .arpa and in-addr.arpa domains since these domains are
> accessed by software and miskates here are unlikely to happen
> (of course sw can have bugs but authors would soon notice it doesn't work).
Whether in-addr.arpa is useful or not depends on where you are in
the world and what the connectivity is like. There was a time when
I would have recommended slaving the root and in-addr.arpa to every
Australian site. When the one link connecting most of Australia
went down this sort of think kept a vast majority of the internal
communications within Australia working as you could find "au" and
you could do reverse lookups of the Australian address blocks.
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: marka at isc.org
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