Only one reverse lookup works

[Mark Andrews]

> In trying to set up a reverse zone file for address block
> 64.161.5.105 to 64.161.5.110 only one address seems to resolve
> successfully: 64.161.5.105 resolves to www.zefox.com, which is
> correct.
> 
> The primary nameserver is at 64.161.5.108, with a named.conf file of
> 
> options {
>         directory "/etc/namedb";
>         pid-file "/var/run/named/pid";
> 
> };
> 
> 
> zone "." {
>         type hint;
>         file "named.root";
> };
> 
> zone "0.0.127.IN-ADDR.ARPA" {
>         type master;
>         file "localhost.rev";
> };
> 
> zone "1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.IP6.INT
> " {
>         type master;
>         file "localhost-v6.rev";
> };
> 
> 
> /*zone "0.168.192.in-addr.arpa" {
>         type slave;
>         file "s/0.168.192.in-addr.arpa.bak";
>         masters {
>                 192.168.1.4;
> };
> */
> zone    "105.5.161.64.in-addr.arpa" {
>         type    master;
>         file    "64.161.5.105.rev";
> }; 
>         
> zone     "zefox.com" {
>         type    master;
>         file    "hosts.zefox.com";
> };
> zone    "zefox.org" {
>         type    master;
>         file    "hosts.zefox.org";
> };
> zone    "zefox.net" {
>         type    master;
>         file    "hosts.zefox.net";
> };
> 
> The relevant inverse zone is 105.5.161.64.in-arpa.,
> which is described in:
> 
> $TTL    86400
> ;
> ;       Address to hostname mappings for all the *zefox* hosts
> ;
> 105.5.161.64.in-addr.arpa.      IN      SOA     ns1.zefox.net   root.ns1.zefo
> x.net. (
>                         2004121504      ;       serial
>                         21600           ;       refresh
>                         1800            ;       retry
>                         604800          ;       expire
>                         900     )       ;       negative cache ttl
>                 IN      NS      ns1.zefox.net.
>                 IN      NS      ns2.zefox.net.
> 
> 108.5.161.64.in-addr.arpa.      IN      NS    ns1.zefox.net.
> 109.5.161.64.in-addr.arpa.      IN      NS    ns2.zefox.net.
> 105.5.161.64.in-addr.arpa.      IN      PTR     www.zefox.com.
> 106.5.161.64.in-addr.arpa.      IN      PTR     www.zefox.net.
> 107.5.161.64.in-addr.arpa.      IN      PTR     www.zefox.org.
> 108.5.161.64.in-addr.arpa.      IN      PTR     ns1.zefox.net.
> 109.5.161.64.in-addr.arpa.      IN      PTR     ns2.zefox.net.
> 110.5.161.64.in-addr.arpa.      IN      PTR     gateway.zefox.net.

	From the parent zone.

110.5.161.64.in-addr.arpa. 7200 IN      CNAME   110.104.5.161.64.in-addr.arpa.
104.5.161.64.in-addr.arpa. 7200 IN      NS      ns1.zefox.net.
104.5.161.64.in-addr.arpa. 7200 IN      NS      ns2.zefox.net.
104.5.161.64.in-addr.arpa. 7200 IN      NS      ns1.pbi.net.
104.5.161.64.in-addr.arpa. 7200 IN      NS      ns2.pbi.net.
;; Received 182 bytes from 206.13.29.11#53(ns2.pbi.net) in 725 ms

	Firstly the zone should be 104.5.161.64.in-addr.arpa not
	105.5.161.64.in-addr.arpa.  The names should all be at or *below*
	104.5.161.64.in-addr.arpa.

$ORIGIN 104.5.161.64.in-addr.arpa.
$TTL 3600
@	SOA     ns1.zefox.net. root.ns1.zefox.net. (
		2004121700 21600 1800 604800 900 )
@	NS	ns1.zefox.net.
@	NS	ns2.zefox.net.
@	NS	ns1.pbi.net.
@	NS	ns2.pbi.net.
105	PTR	www.zefox.com.
106	PTR	www.zefox.net.
107	PTR	www.zefox.org.
108	PTR	ns1.zefox.net.
109	PTR	ns2.zefox.net.
110	PTR	gateway.zefox.net.

	Secondly you should be a stealth slave for the parent zone.
	This will allow local lookups to work when you can't reach
	the parent servers.

zone "5.161.64.in-addr.arpa" {
	type slave;
	masters { 206.13.28.11; 206.13.29.11; };
	file "64.161.5.rev";
	notify no;
};

 
> The reverse zone loads without errors on ns1.zefox.net at
> 64.161.5.108 using named 8.3.7-REL Mon Feb 23 18:30:22 GMT 2004
> but can resolve (locally) only address 64.161.5.105, all others
> result in a "servfail" reply.
> 
> Remote queries fail on inability to reverse resolve the namesever
> address, which is consistent with other failures 8-)
> 
> Seems like this is an error in the 105.5.161.64.in-arpa zone file,
> but I surely can't see it. Any help much appreciated!
> 
> Thanks to all with the patience to read this far!
> 
> bob prohaska
--
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark_Andrews at isc.org