non-glue record below bottom of zone (whoops)

[Bob Vance]

>but this partial stuff is like magic

Your ISP has delegated the zone

    "128.73.198.209.in-addr.arpa."

to you (r nameserver).
Notice that this looks a little fishy, since we're used to seeing the
zone be

    "73.198.209.in-addr.arpa."

and, therein,

128   IN   PTR   foo.bar.com.

But, the trick lies in 3 points:

    1. a subdomain of  "73.198.209.in-addr.arpa." with any (valid) name
       is perfectly legal -- e.g. "128".73.198.209.in-addr.arpa. is a
       valid sub-domain of 73.198.209.in-addr.arpa.
    2. "PTR" RR's can have CNAMES
    3.  CNAMES can point out of the current zone

In addition to the delegation to your server, the ISP has put in the
    "73.198.209.in-addr.arpa."
zone a few extra records:

$ORIGIN  73.198.209.in-addr.arpa.
128    IN NS  ......  ; the delegation of the "128" sub-domain
   ...
129   IN  CNAME   129.128.73.198.209.in-addr.arpa.
130   IN  CNAME   130.128.73.198.209.in-addr.arpa.
131   IN  CNAME   131.128.73.198.209.in-addr.arpa.
   ...

Thus a "PTR" lookup of :

    129.73.198.209.in-addr.arpa. ; a "normal" reverse lookup

will actually find a CNAME pointing to

    129.128.73.198.209.in-addr.arpa.
!!

It is incumbent upon you now to be master and authoritative for

    128.73.198.209.in-addr.arpa.

and have the corresponding "real"  PTR"  records:


$ORIGIN  128.73.198.209.in-addr.arpa.
   ...
130   IN   PTR  digifix.digifix.com.
   ...
144   IN   PTR  www.digifix.com.



-----------------------------------------------
Tks          |  BVance at sbm.com
BV           |  BobVance at alumni.caltech.edu
Sr. Tech. Consultant,    SBM
Vox 770-623-3430         11455 Lakefield Dr.
Fax 770-623-3429         Duluth, GA 30097-1511
===============================================

-----Original Message-----
From: bind-users-bounce at isc.org [mailto:bind-users-bounce at isc.org]On
Behalf Of Scott Anguish
Sent: Thursday, February 01, 2001 3:55 AM
To: bind-users at isc.org
Cc: kcd at daimlerchrysler.com
Subject: Re: non-glue record below bottom of zone (whoops)



(sorry about that.. not a good first posting to the list.. sigh...)

I'm experiencing a similar problem, getting that sort of

zone: 128.73.198.209.in-addr.arpa/IN: non-glue record at bottom of zone:
129.128.73.198.209.in-addr.arpa/PTR

I'm in a situation where I've been given a /26 of my provider's IP space.
Since updating to 8.2.3 reverse DNS is down... DNS is something I've managed
to slug out in the past when I had a full C.. but this partial stuff is like
magic.. .how can I fix this?



my 129.128.73.198.209.in-addr.arpa file looks like this
----------------------------------
$include  named.soa 128.73.198.209.in-addr.arpa.

$ORIGIN 128.73.198.209.in-addr.arpa.

@       IN      NS      digifix.digifix.com.

129     IN      NS      digifix.digifix.com.
129     IN      NS      ns.blacksmith.com.

129             IN      PTR     gate.digifix.com.
130             IN      PTR     digifix.digifix.com.
131             IN      PTR     host131.digifix.com.

... a whole mess of stuff.
186    IN      PTR     host186.digifix.com.
187    IN      PTR     host187.digifix.com.
188    IN      PTR     host188.digifix.com.
189    IN      PTR     host189.digifix.com.

190    IN      PTR     host190.digifix.com.


(my named.soa is like this)
-----------------------
; named.soa
; DIGIFIX start-of-authority
; SERIAL: 10000127
;
;
$TTL 86400
;
@       IN      SOA     digifix.digifix.com.    hostmaster.digifix.com. (
                        10000127       ; Serial
                        10800           ; Refresh
                        1800            ; Retry
                        604800          ; Expire
                        86400 )         ; Minimum