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Re: DNS problem on local network

Jeff D on 08/08/07 00:34, wrote:

On Tue, 7 Aug 2007, Adam Hardy wrote:

debian@reinketelaars.nl on 06/08/07 21:04, wrote:

My server isengard runs dnsmasq to provide the dhcp clients. However it
doesn't recognise any internal network domain name:

isengard:~# hostname
isengard
isengard:~# hostname --fqdn
hostname: Unknown host
isengard:~# nslookup gondor
Server:         194.74.65.69
Address:        194.74.65.69#53

** server can't find gondor: NXDOMAIN



I worked out the domain name should go into /etc/resolv.conf (
http://www.tldp.org/HOWTO/NET3-4-HOWTO-5.html ) but then it seems that

this is under the control of something else.

The domain name should go into /etc/resolv.conf
You also have to assign the first nameserver to be _your_ nameserver and not your ISP's. 

# cat /etc/resolv.conf
search isengard.net
nameserver 127.0.0.1
nameserver ...
nameserver ...
Something is rewriting my resolv.conf at least every minute. I suspected it must be dnsmasq attempting to do the DNS but I just stopped dnsmasq, and yet resolv.conf is still being updated. I had a look over my ps output but dont see anything that could be controlling resolv.conf. 

This is the only entry in it:

nameserver 194.74.65.69

which is the British Telecom DNS.


Do you have the resolvconf package installed?


No. That looks like a culprit, but no. Not installed.
Checking out the dhclient3 and dhclient.conf man pages, it makes no reference to resolv.conf but it does claim to be able to do dynamic DNS updates.
I would have to try disabling the dhclient3 NIC to test if it is this program rewriting resolv.conf, but i have to wait until the others using the net have finished.
How exactly would I set the domain name on the machine - the name I thought I'd chosen when setting up the system from CD? 

At the moment on this machine when I run 'hostname --domain' it returns nothing.

Thanks
Adam
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