Subnet reverse delagation, RFC 2317

Niobos niobos at dest-unreach.be
Thu Jul 29 11:26:24 UTC 2010


On 2010-07-29 09:58, Jukka Pakkanen wrote
> Recursion is only allowed for the local networks, but why the server
> thinks recursion is needed in the first place?
Because it is: dig -x looks for 200.217.142.62.in-addr.arpa.
Your server is not a master for this zone; instead it's master for
128/25.217.142.62.in-addr.arpa.

The original request (200.217.142.62.in-addr.arpa.) is mapped via a
CNAME to a name inside your zone, but this mapping is done by the
ns3.sci.fi. nameserver; hence recursion is needed.

Niobos




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