Bind 9 and DHCP reverse lookup problem

From: Enrico Payne (enricop_at_pharma.co.za)
Date: 01/31/05

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    To: <redhat-list@redhat.com>
Date: Mon, 31 Jan 2005 13:11:12 +0200

    Hi,

    I am running RH9 with Bind 9.2.1 and DHCP (isc-dhcpd-V3.0pl9).

    I have configured DHCP to automatically update the DNS with the
    appropriate ip address and FQDN, and it works fine for the A records,
    but when it tries to add an entry into the xxx.xxx.xxx-addr-arpa. File
    it fails. I have scoured the various how-to's, man pages and the various
    faq e-mail groups etc, and I can not find anything that gives me a clue
    where to look, so I now come to the community to appeal for help.

    NOTE: This is a class B subnet with 1024 addresses per subnet, starting
    at x.x.128.0 and ending on x.x.131.255

    Regards
    Enrico

    This is the error I receive.
    ============================
    Jan 31 12:43:30 jbpn1 dhcpd: if IN A devel.jbpn. domain doesn't exist
    add 216000 IN A devel.jbpn. 172.16.129.203 add 216000 IN TXT devel.jbpn.
    "31eafe525c06abfba4c22f09c77d27fd93": success.
    Jan 31 12:43:30 jbpn1 dhcpd: delete IN PTR 203.129.16.172.in-addr.arpa.
    add 216000 IN PTR 203.129.16.172.in-addr.arpa. devel.jbpn.: not
    authorized.
    Jan 31 12:43:30 jbpn1 dhcpd: DHCPREQUEST for 172.16.129.203 from
    00:11:0a:3e:dd:9b (devel) via eth0
    Jan 31 12:43:30 jbpn1 dhcpd: DHCPACK on 172.16.129.203 to
    00:11:0a:3e:dd:9b (devel) via eth0

    My dhcpd.conf file looks like this.
    ===================================

    default-lease-time 432000;
    max-lease-time 604800;
    option domain-name-servers 172.16.128.29;
    option domain-name "jbpn.";
    #
    key mydhcpserver {
     algorithm hmac-md5;
     secret "Some MD5 Key data";
    };
    #
    subnet 172.16.128.0 netmask 255.255.252.0 {
     ddns-updates on;
     range 172.16.129.96 172.16.131.254;
     option subnet-mask 255.255.252.0;
     option broadcast-address 172.16.131.255;
     option routers 172.16.128.3;
     authoritative;
     zone jbpn. { primary 172.16.128.29; key mydhcpserver; }
     zone 128.16.172.in-addr.arpa. { primary 172.16.128.29; key
    mydhcpserver; }
    }

    My named.conf file looks like this.
    ===================================
    options {
     directory "/var/named";
     query-source address * port 53;
    };

    logging {
     channel update_debug {
       file "/var/log/update-debug.log";
       severity debug 3;
       print-category yes;
       print-severity yes;
       print-time yes;
     };
                channel security_info {
                     file "/var/log/named-th.info";
                     severity info;
                     print-category yes;
                     print-severity yes;
                     print-time yes;
                };

            category update { update_debug; };
            category security { security_info; };
    };

    key mydhcpserver {
     algorithm hmac-md5;
     secret "Some MD5 Key data";
    };

    zone "." {
     type hint;
     file "named.ca";
    };

    zone "jbpn." {
     type master;
     file "named.jbpn";
     allow-query { any; };
     allow-update { key mydhcpserver; };
    };

    zone "128.16.172.in-addr.arpa" {
     type master;
     file "named.172.16.128";
     allow-query { any; };
     allow-update { key mydhcpserver; };
    }; 

    --
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