another classless IN-ADDR.ARPA delegation question

[Frank Joerdens]

I guess I'm stuck: Our ISP is supposed to delegate the zone

176/28.212.8.62.in-addr.arpa

to us, and it appears to be already configured (as far as I can tell
anyway, and that's what their hostmaster tells me) at their end:

----------------------- snip -----------------------
bender:~ # dig @ns.kkf.net 176/28.212.8.62.in-addr.arpa ns

; <<>> DiG 8.3 <<>> @ns.kkf.net 176/28.212.8.62.in-addr.arpa ns
; (1 server found)
;; res options: init recurs defnam dnsrch
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 6
;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 4
;; QUERY SECTION:
;;      176/28.212.8.62.in-addr.arpa, type = NS, class = IN

;; ANSWER SECTION:
176/28.212.8.62.in-addr.arpa.  1D IN NS  ns.archi-me-des.de.
176/28.212.8.62.in-addr.arpa.  1D IN NS  ns.kkf.net.
176/28.212.8.62.in-addr.arpa.  1D IN NS  ns2.kkf.net.
176/28.212.8.62.in-addr.arpa.  1D IN NS  ns3.kkf.net.

;; ADDITIONAL SECTION:
ns.archi-me-des.de.     1H IN A         212.63.41.234
ns.kkf.net.             11h6m40s IN A   212.63.32.10
ns2.kkf.net.            11h6m40s IN A   212.63.40.10
ns3.kkf.net.            11h6m40s IN A   212.63.37.246

;; Total query time: 44 msec
;; FROM: bender to SERVER: ns.kkf.net  212.63.32.10
;; WHEN: Fri Nov 30 18:34:18 2001
;; MSG SIZE  sent: 46  rcvd: 202
----------------------- snap -----------------------

The box under my control is ns.archi-me-des.de, the others are at the
provider's end. My named.conf entry is:

----------------------- snip -----------------------
zone "176/28.212.8.62.IN-ADDR.ARPA" {
               type master;
               file "28_176.212.8.62.zone";
};
----------------------- snap -----------------------

And the zone file itself is:

----------------------- snip -----------------------
bender:~ # cat /var/named/28_176.212.8.62.zone
$TTL    3600
@       IN SOA  ns.archi-me-des.de. frank.joerdens.de. (
                         2001113003   ; serial YYYYMMDDnn
                         86400        ; refresh (  24 hours)
                         7200         ; retry   (   2 hours)
                         3600000      ; expire  (1000 hours)
                         172800 )     ; minimum (   2 days)
;
; nameserver:
;
                        NS   ns.archi-me-des.de.
                        NS   ns2.kkf.net.
                        NS   ns3.kkf.net.

190                     PTR     ns.archi-me-des.de.
----------------------- snap -----------------------

Which means that, as I understand the mechanism, the IP address
62.8.212.190 should resolve to ns.archi-me-des.de. But it doesn't:

----------------------- snip -----------------------
bender:~ # dig @localhost -x 62.8.212.190

; <<>> DiG 8.3 <<>> @localhost -x
; (1 server found)
;; res options: init recurs defnam dnsrch
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 6
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 3, ADDITIONAL: 3
;; QUERY SECTION:
;;      190.212.8.62.in-addr.arpa, type = ANY, class = IN

;; ANSWER SECTION:
190.212.8.62.in-addr.arpa.  18h35m2s IN CNAME  190.176/28.212.8.62.in-addr.arpa.

;; AUTHORITY SECTION:
212.8.62.in-addr.arpa.  2d10h1m6s IN NS  ns.kkf.net.
212.8.62.in-addr.arpa.  2d10h1m6s IN NS  ns2.kkf.net.
212.8.62.in-addr.arpa.  2d10h1m6s IN NS  ns3.kkf.net.

;; ADDITIONAL SECTION:
ns.kkf.net.             5h41m42s IN A   212.63.32.10
ns2.kkf.net.            23h47m33s IN A  212.63.40.10
ns3.kkf.net.            23h47m33s IN A  212.63.37.246

;; Total query time: 8 msec
;; FROM: bender to SERVER: localhost  127.0.0.1
;; WHEN: Fri Nov 30 18:28:01 2001
;; MSG SIZE  sent: 43  rcvd: 176
----------------------- snap -----------------------

Can anyone explain? My guess would be that the CNAME entries in the
provider's zone file, like

190	CNAME	190.176/28.212.8.62.in-addr.arpa.

are missing.

Many thanks in advance,

Frank