Subnet reverse delagation, RFC 2317
Jukka Pakkanen
jukka.pakkanen at qnet.fi
Thu Jul 29 07:58:39 UTC 2010
Doing first time the RFC 2317 style subnet reverse DNS, and have a
problem with recursion. When doing a query like "dig @ns1.qnet.fi -x
62.142.217.200" is succeeds from the local network, but outside I get
"recursion requested but not available". Our /24 reverse zones work
fine, the server knows it's the master and serves ok, like "dig
@ns1.qnet.fi -x 62.142.220.5".
Recursion is only allowed for the local networks, but why the server
thinks recursion is needed in the first place?
Server ns1.qnet.fi, BIND 9.7.1-P1 W2K3
named.conf:
....
zone "128/25.217.142.62.in-addr.arpa" {
type master;
file "named.62.142.217.25-128";
};
;
; File: named.62.142.217.25-128
;
$TTL 86400
$ORIGIN 128/25.217.142.62.IN-ADDR.ARPA.
@ IN SOA ns1.qnet.fi. xxxxxxx.qnet.fi. (
201007281 ; serial number
28800 ; refresh every 12 hours
7200 ; retry after 2 hours
604800 ; expire after 2 weeks
86400) ; default ttl is 2 days
;
@ IN NS ns1.qnet.fi.
IN NS ns2.qnet.fi.
IN NS ns3.qnet.fi.
....
200 IN PTR x200.qnet.fi.
....
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