reverse dns works but kinda doesnt (sub class c)

[Mark_Andrews at isc.org]

> 
> 
> Aj wrote:
> > 
> > I have configured my ns as a primary for my 64 block of ip space, and i
> > have told my isp to make mine an authority for those 64 blocks.
> > 
> > so they did add all 64 cnames aliases to my nameserver. when i do
> > nslookup
> > ip address.. i do get the results back that i want but the thing is when
> > i go on IRC etc., with one of the hosts.. it doesnt reverse.. when you
> > do whois on it.. only the ip is showing.
> > 
> > is this a problem in my configuratin or my isp's side? here is one of
> > the
> > ip address if you want to know more info, 209.157.120.36.
> > 
> > thanks for your help.
> 
> It sounds like your 64 address part of the zone isn't delegated to you.
> This is possibly because the ISP didn't want to go thought the RFC 2317
> kludge. (Step 1, create a CNAME record for all of the PTR records)
> 
> Michael
> 
> 
	Did you actually try to do a reverse look up on 209.157.120.36?
	It looks fine to me:-)

	Mark

; <<>> DiG 8.2 <<>> -x ptr 
;; res options: init recurs defnam dnsrch
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 6
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 2, ADDITIONAL: 2
;; QUERY SECTION:
;;	36.120.157.209.in-addr.arpa, type = PTR, class = IN

;; ANSWER SECTION:
36.120.157.209.in-addr.arpa.  2d23h40m53s IN CNAME  36.entic.120.157.209.in-addr.arpa.
36.entic.120.157.209.in-addr.arpa.  23h41m55s IN PTR  fiber.entic.net.

;; AUTHORITY SECTION:
entic.120.157.209.in-addr.arpa.  2d23h40m53s IN NS  ns1.entic.net.
entic.120.157.209.in-addr.arpa.  2d23h40m53s IN NS  ns2.entic.net.

;; ADDITIONAL SECTION:
ns1.entic.net.		1d23h40m54s IN A  209.157.120.34
ns2.entic.net.		1d23h40m54s IN A  209.157.120.35

;; Total query time: 1 msec
;; FROM: bsdi.dv.isc.org to SERVER: default -- 10.0.0.1
;; WHEN: Tue Jun 15 10:37:15 1999
;; MSG SIZE  sent: 45  rcvd: 189

--
Mark Andrews, Internet Software Consortium
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org