[postmortem and HOWTO] DNS lookup fails connecting to server on same network

[Ryan Rix]

On Mon November 3 2008 10:09:51 pm I wrote:
> Everything works shiningly, except for one thing: when I try to access the
> server via its fqdn, my laptop returns a DNS error, unknown host.

Hi,

as of Saturday this is solved.

As to why dhclient was automatically adding those invalid DNS servers...:
rrix at wanton:~$ cat /etc/dhcp3/dhclient.conf|grep prepend
#prepend domain-name-servers 127.0.0.1;
prepend domain-name-servers 63.208.196.113, 63.208.196.114;

That's where the invalid entries came from. I didn't notice this until about 
15 minutes ago... :] But, yeah, that would have fixed the issues two weeks 
ago.

Basically, before saturday night, i was being forced to manually remove these 
entries from my /etc/resolve.conf, which was quite the pain, since the file 
was reupdated every hour or so...

So, I read around, and decided that installing my own DNS server, the bind9 
package in debian, which provides named, the Internet Domain Name Server 
Daemon, onto my laptop. It required absolutely no configuration using it in 
this sort of setup. While this is quite the solution, installing my own 
nameserver... it works!

The only thing I had to do at this point was to, yeah, i know, disable 
dhclient from autoupdating the resolv.conf file (I didn't do this in the 
first place because the laptop goes to multiple ISPs and I am not sure how, 
for example, qwest would like me connecting to Cox DNS or vice versa so did 
not think it was a viable solution until i had my own dns up.) and replace 
the /etc/resolv.conf file with one pointing to localhost...
$echo nameserver 127.0.0.1  > /etc/resolv.conf
as root.

Then you are set for good!
(consider this a quickie on bind9 :P )

~Ryan

--
Thanks and best regards,
Ryan Rix
TamsPalm - The PalmOS Blog

And just when you thought you've seen it all, along comes a 
Lambda four foot tall



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