Sorry, here again the named.conf file on the Home DNS server:
/var/named/chroot/etc/named.conf
//=== Beginning of file ===
options {
listen-on port 53 { 127.0.0.1; 192.168.9.33;};
listen-on-v6 port 53 { ::1; };
directory "/var/named";
dump-file "/var/named/data/cache_dump.db";
statistics-file "/var/named/data/named_stats.txt";
memstatistics-file "/var/named/data/named_mem_stats.txt";
query-source port 53;
query-source-v6 port 53;
allow-query { localhost; 192.168.9.32/28;};
// forward first;
// forwarders {192.168.9.5;};
};
include "/etc/named.rfc1912.zones";
zone "home.office.net" IN {
type master;
file "home.zone";
};
zone "32-39.9.168.192.in-addr.arpa" IN {
type master;
file "32-39.9.168.192.zone";
};
//=== End of file ===
> Hi all,
>
> First, please bear with me; i know this is not the place to ask about
> BIND; but i'm hoping that, someone out there could help me. Also, sorry
> for the lengthy post but most of it is to explain my scenario. And I
> believe, the answer to my question will be very short.
>
> Basically, I tried to delegate a reverse sub-domain (a subnet smaller than
> /24). I could query a PTR record from the parent server but i could not
> from the child server where all the configuration of the sub-domain
> belongs.
>
> Here is the detail:
>
> I have my home network connected to my office network with a registered
> domain (office.net, for example) with the scenario below. On the Office
> DNS server (ns1.office.net), I would like to delegate both the forward
> sub-domain home.office.net and reverse one 192.168.9.32/28 to the Home DNS
> server (ns1.home.office.net).
>
> My problem is that, on the Home server, i could not do this query:
>
> $ host 192.168.9.33
> Host 33.9.168.192.in-addr.arpa not found: 3(NXDOMAIN)
>
> While from the Office server, i can:
> $ host 192.168.9.33
> 33.9.168.192.in-addr.arpa is an alias for 33.32-39.9.168.192.in-addr.arpa.
> 33.32-39.9.168.192.in-addr.arpa domain name pointer ns1.home.kis.net.kh.
>
> What could be the cause of problem? I might miss a transition somewhere
> between the office parent zone and the home child zone. But i just don't
> know. Everything else seems to work fine (the sub-domain forward zones are
> ok).
>
> I've been following the book of O'Reilly "DNS & BIND", 5th edition, which
> is a great book i found; but the part on the reverse sub-domain is a bit
> too tricky for me.
>
> Could someone please help me out?
>
> Here is the scenario:
>
> Office Network:
> ===============
> Domain: office.net (not real, used as example here only)
> IP subnet : 192.168.9.0/24 (not real, used as example here only)
> DNS Server: ns1.office.net (IP:192.168.9.1)
>
> Home Network:
> ==============
> Domain: home.office.net
> IP Subnet : 192.168.9.32/28
> DNS Server: ns1.home.office.net (IP:192.168.9.33)
>
> On both of the DNS servers, i'm running BIND on Fedora 9.
> The configuration files on the Office server (ns1.office.net) looks as
> below:
>
> 1. /etc/resolv.conf
>
> === Beginning of file ===
> search office.net
> nameserver 192.168.9.1
> nameserver 192.168.9.2
> === End of file ===
>
> 2. /var/named/chroot/etc/named.conf
> (I'm using bind-chroot here with ROOTDIR=/var/named/chroot set in
> /etc/sysconfig/named)
>
> === Beginning of file ===
> options {
> listen-on port 53 { 127.0.0.1; 192.168.9.1;};
> // listen-on-v6 port 53 { ::1; };
> directory "/var/named";
> dump-file "/var/named/data/cache_dump.db";
> statistics-file "/var/named/data/named_stats.txt";
> memstatistics-file "/var/named/data/named_mem_stats.txt";
> allow-query { trusted;};
> recursion yes;
> };
>
> acl trusted {127.0.0.1; 192.168.9.0/24;};
>
> include "/etc/named.rfc1912.zones";
>
> zone "office.net" IN {
> type master;
> file "office.zone";
> };
>
> zone "9.168.192.in-addr.arpa" IN {
> type master;
> file "9.168.192.zone";
> };
> === End of file===
>
> 3. /var/named/chroot/var/named/office.zone
>
> === Beginning of file ===
> $TTL 1D
> @ IN SOA ns1.office.net. root.office.net. (
> 08080201 ; serial
> 1D ; refresh
> 1H ; retry
> 1W ; expire
> 3H ) ; minimum
> NS ns1.office.net.
> NS ns2.office.net.
> MX 10 mail1.office.net.
> MX 20 mail2.office.net.
> A 192.168.9.12
>
> ns1 IN A 192.168.9.1
> ns2 IN A 192.168.9.2
> mail1 IN A 192.168.9.11
> mail2 IN A 192.168.9.12
> www IN CNAME mail2
>
> ;; Glue records for home.office.net
> home IN NS ns1.home
> ns1.home IN A 192.168.9.33
> === End of file ===
>
> 4. /var/named/chroot/var/named/9.168.192.zone:
>
> === Beginning of file ===
> $TTL 1D
> @ IN SOA ns1.office.net. root.office.net. (
> 08080203 ; serial
> 1D ; refresh
> 1H ; retry
> 1W ; expire
> 3H ) ; minimum
> NS ns1.office.net.
> NS ns2.office.net.
>
> 1 IN PTR ns1.office.net.
> 2 IN PTR ns2.office.net.
> 11 IN PTR mail1.office.net.
> 12 IN PTR mail2.office.net.
>
> $GENERATE 33-39 $ CNAME $.32-39
> 32-39 IN NS ns1.home.office.net.
> === End of file ===
>
> And finally, the configuration files on the Home server
> (ns1.home.office.net) looks as below:
>
> 1. /etc/resolv.conf
>
> #=== Beginning of file ===
> search home.office.net
> nameserver 192.168.9.33
> #=== End of file ===
>
> 2. /var/named/chroot/etc/named.conf
>
> //=== Beginning of file ===
> options {
> listen-on port 53 { 127.0.0.1; 192.168.9.33;};
> listen-on-v6 port 53 { ::1; };
> directory "/var/named";
> dump-file "/var/named/data/cache_dump.db";
> statistics-file "/var/named/data/named_stats.txt";
> memstatistics-file "/var/named/data/named_mem_stats.txt";
> query-source port 53;
> query-source-v6 port 53;
> allow-query { localhost; 192.168.9.32/28;};
> // forward first;
> // forwarders {192.168.9.5;};
> };
>
> include "/etc/named.rfc1912.zones";
>
> zone "home.kis.net.kh" IN {
> type master;
> file "home.zone";
> };
>
> zone "32-39.9.168.192.in-addr.arpa" IN {
> type master;
> file "32-39.9.168.192.zone";
> };
> //=== End of file ===
>
> 3. /var/named/chroot/var/named/home.zone
>
> ;=== Beginning of file ===
> $TTL 86400
> @ IN SOA ns1.home.office.net. root.home.office.net. (
> 08080501 ; Serial
> 28800 ; Refresh
> 14400 ; Retry
> 3600000 ; Expire
> 86400 ) ; Minimum
> IN NS ns1.home.office.net.
> IN MX 10 mail.home.office.net.
>
> ns1 IN A 192.168.9.33
> mail IN A 192.168.9.35
> ;=== End of file ===
>
> 4. /var/named/chroot/var/named/32-39.9.168.192.zone
>
> ;=== Beginning of file ===
> $TTL 86400
> @ IN SOA ns1.home.office.net. root.home.office.net. (
> 08080203 ; Serial
> 28800 ; Refresh
> 14400 ; Retry
> 3600000 ; Expire
> 86400 ) ; Minimum
> IN NS ns1.home.office.net.
>
> 33 IN PTR ns1.home.office.net.
> 35 IN PTR mail.home.office.net.
> ;=== End of file ===
>
> Thanks in advance for any ideas?
>
> Best,
> Khem
>
>
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