Dear All,

I wonder if someone could give me some advice on sorting out the DNS reverse
lookup problem on a Sun  SPARCstation10 running SUNOS 4.1.4 operating system
(almost obsolete). I mainly use it as a DNS server.

Strangely enough, the DNS server that I have problem with provides proper
DNS reverse lookup for Client machines (unix workstations and Windows PCs).
But it cannot do DNS reverse lookup correctly for itself.

The information shows the correct default server name and IP address after
typing "nslookup" on a command line. but when I type an IP address for DNS
reverse lookup for a DNS hostname, it gives Name: [same IP address], ins
tead
of a DNS hostname.

Any suggestions are much appreciated.

Regards,

Ray
--
Raymond Lam
Departments of Engineering and Materials
Queen Mary, university of London
Mile End Road, London, E1 4NS, U.K.
Email: R.Lam@qmul.ac.uk  Tel.: 020 7882 3047  Fax: 020 8983 3052
From outside U.K.  Tel.: +44 20 7882 3047    Fax: +44 20 8983 3052

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Raymond Lam <R.Lam@qmul.ac.uk> wrote:
> Dear All,

[ Please think about setting Followup-To: ]

> I wonder if someone could give me some advice on sorting out the DNS rever
se
> lookup problem on a Sun  SPARCstation10 running SUNOS 4.1.4 operating syst
em
> (almost obsolete). I mainly use it as a DNS server.

> Strangely enough, the DNS server that I have problem with provides proper
> DNS reverse lookup for Client machines (unix workstations and Windows PCs)
.
> But it cannot do DNS reverse lookup correctly for itself.

> The information shows the correct default server name and IP address after
> typing "nslookup" on a command line. but when I type an IP address for DNS
> reverse lookup for a DNS hostname, it gives Name: [same IP address], i
nstead
> of a DNS hostname.

> Any suggestions are much appreciated.

There's probably just a reverse entry in the zone files missing.
You could try the very good DNS-HOWTO (www.tldp.org),it might
written for a newer DNS version then you are running, but should
be helpful.

Good luck

- --
Michael Heiming (GPG-Key ID: 0xEDD27B94)

Remove +SIGNS and www. if you expect an answer, sorry for
inconvenience, but I get tons of spam.
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In article <c4c0g6$bo6$1@beta.qmul.ac.uk>, "Raymond Lam" <R.Lam@qmul.ac.uk> writes:
> Dear All,
>
> I wonder if someone could give me some advice on sorting out the DNS rever
se
> lookup problem on a Sun  SPARCstation10 running SUNOS 4.1.4 operating syst
em
> (almost obsolete). I mainly use it as a DNS server.
>
> Strangely enough, the DNS server that I have problem with provides proper
> DNS reverse lookup for Client machines (unix workstations and Windows PCs)
.
> But it cannot do DNS reverse lookup correctly for itself.
>
> The information shows the correct default server name and IP address after
> typing "nslookup" on a command line. but when I type an IP address for DNS
> reverse lookup for a DNS hostname, it gives Name: [same IP address], i
nstead
> of a DNS hostname.
>
> Any suggestions are much appreciated.
>

The old nslookup in SunOS 4.x does only the basics.
Reverse lookups must be queried as

nslookup -q=ptr 4.3.2.1.in-addr.arpa

Only modern nslookup implementations allow a simple

nslookup 1.2.3.4

--
Michael Tosch
IT Specialist
HP Managed Services Germany
Phone +49 2407 575 313
Mail: michael.tosch@hp.com

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