Subnet reverse delagation, RFC 2317

[Jukka Pakkanen]

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.
....