when I do

[root@turtle named]# named-checkzone 0.1.168.192.in-addr-arpa mytrek.com.rev
dns_master_load: mytrek.com.rev:3: ignoring out-of-zone data (168.192.in-addr.arpa)
dns_master_load: mytrek.com.rev:12: ignoring out-of-zone data (1.1.168.192.in-addr.arpa)
zone 0.1.168.192.in-addr-arpa/IN: could not find NS and/or SOA records
zone 0.1.168.192.in-addr-arpa/IN: has 0 SOA records
zone 0.1.168.192.in-addr-arpa/IN: has no NS records
[root@turtle named]#

thats the rror I get! the forwrd zone 'works' fine it maps names to adress.

the zone file:

$ORIGIN .
$TTL 3600 ; 1 hour
168.192.in-addr.arpa IN SOA turtle.mytrek.com. root.turtle.mytrek.com. (
1 ; serial
3600 ; refresh (1 hours)
900 ; retry (15 mins)
3600000 ; expire (5 week 6 days 16 hrs)
3600 ; minimum (1 hr)
)
NS turtle.mytrek.com.
$ORIGIN 1.168.192.in-addr.arpa.
1 PTR turtle.mytrek.com.

and named.conf

# /etc/named.conf


acl dhcp-srvr { localhost;};

options {
directory "/var/named/";
};

include "/etc/rndc.key";

controls {
inet 0.0.0.0 port 953
allow { 127.0.0.1; } keys { rndckey; };
};

//This staement associates a key to a server
server 127.0.0.1 {
keys { turtle.mytrek.com.;};
};

key turtle.mytrek.com. {
algorithm hmac-md5;
secret "fhgvJhG7aIbWA7I6K6DOqWByGqfdEtXdmud4kOjRTbTlBHFwy8msB672EqZs";
};



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


zone "mytrek.com" in {
type master;
file "mytrek.com.zone";
allow-update { dhcp-srvr; };
};

zone "0.1.168.192.in-addr.arpa" in {
type master;
file "mytrek.com.rev";
allow-update { dhcp-srvr; };
};


Any suggestions will be much appreciated!!

A snippet of /var/log/messages

Jun 2 20:45:10 turtle dhcpd: Added new forward map from WINXP.mytrek.com to 192.168.1.200
Jun 2 20:45:10 turtle dhcpd: unable to add reverse map from 200.1.168.192.168.192.in-addr.arpa to WINXP.mytrek.com: not authorized
Jun 2 20:45:10 turtle dhcpd: DHCPREQUEST for 192.168.1.200 (192.168.1.1) from 00:40:f4:19:a8:29 (WINXP) via eth0
Jun 2 20:45:10 turtle dhcpd: DHCPACK on 192.168.1.200 to 00:40:f4:19:a8:29 (WINXP) via eth0


Thanks in advance

I'm not entirely sure that I understand your problem correctly, but setting up reverse addresses won't necessarily just work.

I have a couple of servers hosted by different ISPs. I can set up DNS records so that people can find them, but I don't own those IP addresses; if I want to be able to do a reverse lookup, I have to speak nicely to the ISP and get THEM to set up the in-addr.arpa record. They may or may not be willing to do this.

Here's an example using dummy addresses, but based on my own situation:

$dig foo.bar.baz

;; ANSWER SECTION:
foo.bar.baz. 1200 IN A 192.168.0.1

;; AUTHORITY SECTION:
bar.baz. 1200 IN NS ns1.insert-isp-here.com.
bar.baz. 1200 IN NS ns2.insert-isp-here.com.

Now, if I try to work the other way around:

$dig 1.0.168.192.in-addr.arpa

;; AUTHORITY SECTION:
0.168.192.in-addr.arpa. 3600 IN SOA ns2.insert-isp-here.com.

Even if I were to insert an in-addr.arpa record in my DNS, this would still come out the same. It takes the ISP to make the change...

Hope this helps.

Thanx for the reply!! I have a small network - Fedora2 as dhcp,nameserver, and mail server(not configured properly yet tho...) , the 4 other linux boxes and a winxp box as dhcp clients. the network is not connected to the internet , I was hoping to set it up so that all the queries are resolved by the nameserver for the network. I can ping all the machines from each other(name and ip), it takes a while for the name to be resolved and then the ping takes place- from anywhere on the network- so far so good!!!
If I issue: host winxp.mytrek.com
I get a reply telling me the address of the host , however , if I issue : host 192.168.1.200(address of winxp) it doesn't return an answer but an error!!!
Is what I'm trying to do possible!?

Also : host -l mytrek.com returns the nameserver and all availables hosts on the network

When you do a reverse lookup, you should put the address in reverse.

For instance, if
host 192.168.1.1
gives you www.foo.com,

to do it backwards, you say:
host 1.1.168.192

The host command helps you by supplying the .in-addr.arpa itself.

I would question whether you need to do DNS for your internal network - with only a few machines, it's much easier just to use hosts files. My internal network is about the same size and I do everything with /etc/hosts.

Cheers I'll try it when I get in. I originally had the network configured with the /etc/hosts files but wanted to 'mess around' with dhcp and dns to see if I could get it to work!Thanx for your replies. What does the error in /var/log/messages mean?

Jun 2 20:45:10 turtle dhcpd: Added new forward map from WINXP.mytrek.com to 192.168.1.200
Jun 2 20:45:10 turtle dhcpd: unable to add reverse map from 200.1.168.192.168.192.in-addr.arpa to WINXP.mytrek.com: not authorized
Jun 2 20:45:10 turtle dhcpd: DHCPREQUEST for 192.168.1.200 (192.168.1.1) from 00:40:f4:19:a8:29 (WINXP) via eth0
Jun 2 20:45:10 turtle dhcpd: DHCPACK on 192.168.1.200 to 00:40:f4:19:a8:29 (WINXP) via eth0

Where it says its unable to add reverse map: not authorized?

I was thinkin maybe my zone/named configuration file is wrong

I'm no DNS expert - I'm happy to leave this to others ;-)

However, spot the weirdness:
dhcpd: unable to add reverse map from 200.1.168.192.168.192.in-addr.arpa

I think perhaps that your configuration is already trying to add 192.168 and you're giving it an extra one...

Yeah think that could be it, I'll alter the file when I get in and see if it makes a difference

Yaeh that did the trick, everythings working ok

/var/log/messages

Jun 5 08:04:33 turtle dhcpd: DHCPDISCOVER from 00:40:f4:19:a8:29 via eth0
Jun 5 08:04:34 turtle dhcpd: DHCPOFFER on 192.168.1.200 to 00:40:f4:19:a8:29 (WINXP) via eth0
Jun 5 08:04:34 turtle named[2356]: client 127.0.0.1#32773: updating zone 'mytrek.com/IN': adding an RR
Jun 5 08:04:34 turtle named[2356]: client 127.0.0.1#32773: updating zone 'mytrek.com/IN': adding an RR
Jun 5 08:04:34 turtle dhcpd: Added new forward map from WINXP.mytrek.com to 192.168.1.200
Jun 5 08:04:34 turtle named[2356]: client 192.168.1.1#32773: updating zone 'in-addr.arpa/IN': deleting an rrset
Jun 5 08:04:34 turtle named[2356]: client 192.168.1.1#32773: updating zone 'in-addr.arpa/IN': adding an RR
Jun 5 08:04:34 turtle dhcpd: added reverse map from 200.1.168.192.in-addr.arpa to WINXP.mytrek.com
Jun 5 08:04:34 turtle dhcpd: DHCPREQUEST for 192.168.1.200 (192.168.1.1) from 00:40:f4:19:a8:29 (WINXP) via eth0
Jun 5 08:04:34 turtle dhcpd: DHCPACK on 192.168.1.200 to 00:40:f4:19:a8:29 (WINXP) via eth0

Thanx for your help!! Much appreciated

Hi,

This is an old thread but my problem is related...

I am getting this on my syslog:
added reverse map from 200.1.168.192.1.168.192.in-addr.arpa to HOST

And I needed to know how you corrected your problem.

Thanks,
Marco