Problem with reverse lookup in CIDR delegated domain [file details]

[Mark Andrews]

> (first time configuring bind/dns)
> 
> I am setting up a domain in a block of 5 IP numbers:
>    67.116.182.186 - 67.116.182.190  hostmask 255.255.255.248
> 
> with network access of 67.116.182.184/29
> 
> I have set the domain up in bind 9.2.2 and everything is
> working except reverse, i.e. number to name.
> 
> Below are the files: named.conf and the forward and reverse
> zone files for the domain.
> 
> FILE = /etc/named.conf
> 
> options {
> 	directory "/var/named";
> 	query-source address * port 53;
> 	pid-file "named.pid";
> };
> 
> [root, local & localrev zones not listed for brevity]
> 
> zone "jms-corp.net" {
> 	type master;
> 	file "m/named.jms-corp.net";
> 	notify yes;
> };
> 
> zone "182.116.67.in-addr.arpa" {
> 	type master;
> 	file "m/named.67.116.182";
> 	notify yes;
> };

	You have the wrong zone name for your zone.  You also
	need to be a slave of the parent zone to local lookups
	to succeed when your connection to the Internet is down.

zones "182.116.67.in-addr.arpa" {
	type slave;
	file "s/named.67.116.182";
	masters { 206.13.28.11; 206.13.2g.11; };
	notify no;
};

zones "184.182.116.67.in-addr.arpa" {
	type master;
	file "m/named.67.116.182.184";
};

> 
> 
> FILE = /var/named/m/named.jms-corp.net
> 
> $TTL	86400
> @       IN      SOA     dragon.jms-corp.net. jrs.jms-corp.net.  (
>                                       2          ; Serial
>                                       8H         ; Refresh
>                                       10M        ; Retry
>                                       3600000    ; Expire
>                                       86400 )    ; Minimum
> 
>         IN      NS      ns.jms-corp.net.
>         IN      NS      ns1.pbi.net.
>         IN      MX      10 jms-corp.net.
>         IN      A       67.116.182.186
> 
> localhost  IN   A       127.0.0.1
> 
> ns      IN      A       67.116.182.186
> www     IN      A       67.116.182.186
> ftp     IN      A       67.116.182.186
> mail    IN      A       67.116.182.186
> 
> 
> FILE = /var/named/m/named.67.116.182
> 
> $TTL	86400
> @       IN      SOA     dragon.jms-corp.net. jrs.jms-corp.net.  (
>                                       5          ; Serial
>                                       8H         ; Refresh
>                                       10M        ; Retry
>                                       3600000    ; Expire
>                                       86400 )    ; Minimum
> ; My nameserver
>         IN      NS      ns.jms-corp.net.
> ; Secondary nameserver from pacbell
>         IN      NS      ns1.pbi.net.

	You are missing ns2.pbi.net.
 
> 186.184.182.116.67.in-addr.arpa.     IN      PTR     dragon.jms-corp.net.
> 
> ==============================
> 
> Note the above PTR record. This is what I was told was needed here.
> When I read RFC2317 there was nothing like this. I did find at the
> following URL a slight explanation:
> 
>    http://www.acmebw.com/askmrdns/00007.htm
> 
> Following is the output of dig using the ISPs nameserver:
> 
> ; <<>> DiG 9.2.2-P3 <<>> @ns1.pbi.net -x 67.116.182.186
> ;; global options:  printcmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 42182
> ;; flags: qr rd; QUERY: 1, ANSWER: 1, AUTHORITY: 3, ADDITIONAL: 2
> 
> ;; QUESTION SECTION:
> ;186.182.116.67.in-addr.arpa.	IN	PTR
> 
> ;; ANSWER SECTION:
> 186.182.116.67.in-addr.arpa. 7200 IN	CNAME	186.184.182.116.67.in-addr.arpa
> .
> 
> ;; AUTHORITY SECTION:
> 184.182.116.67.in-addr.arpa. 7200 IN	NS	dragon.jms-corp.net.
> 184.182.116.67.in-addr.arpa. 7200 IN	NS	ns1.pbi.net.
> 184.182.116.67.in-addr.arpa. 7200 IN	NS	ns2.pbi.net.
> 
> ;; ADDITIONAL SECTION:
> ns1.pbi.net.		172800	IN	A	206.13.28.11
> ns2.pbi.net.		172800	IN	A	206.13.29.11
> 
> ;; Query time: 33 msec
> ;; SERVER: 206.13.28.11#53(ns1.pbi.net)
> ;; WHEN: Wed Mar  3 09:40:23 2004
> ;; MSG SIZE  rcvd: 172
> 
> Which shows the "extended" CNAME record. Next is the output of dig
> from my nameserver:
> 
> ; <<>> DiG 9.2.2-P3 <<>> -x 67.116.182.186
> ;; global options:  printcmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 13644
> ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
> 
> ;; QUESTION SECTION:
> ;186.182.116.67.in-addr.arpa.	IN	PTR
> 
> ;; AUTHORITY SECTION:
> 182.116.67.in-addr.arpa. 86400	IN	SOA	dragon.jms-corp.net. jr
> s.jms-corp.net. 5 28800 600 3600000 86400
> 
> ;; Query time: 1 msec
> ;; SERVER: 67.116.182.186#53(67.116.182.186)
> ;; WHEN: Wed Mar  3 09:42:19 2004
> ;; MSG SIZE  rcvd: 104
> 
> Anyone have any help, comments, dumbsh*ts, etc to offer?
> 
> Thank you
> 
> Jim
> 
> jrs (at) jms-corp.net | j-m-s (at) pacbell.net
> -- 
> 
> Quidquid latine dictum sit, altum viditur.
> 
> 
--
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark_Andrews at isc.org