Slow DNS resolution

I have two boxes I use as desktops on my network. One runs Windows XP
and the Other Mandrake Linux (10.0). The Linux box seems to take a long
time for DNS resolution while the Windows system is a lot quicker. Is
there any way to speed this up?



ryan@ryankaskel.com

On 16 May 2005 16:37:33 -0700, (E-Mail Removed) wrote:
> I have two boxes I use as desktops on my network. One runs Windows XP
> and the Other Mandrake Linux (10.0). The Linux box seems to take a long
> time for DNS resolution while the Windows system is a lot quicker. Is
> there any way to speed this up?

Depends.


One or both problems may exist. If you placed something in the
zeroconf box during configuration you need to disable tmdns.

click up a terminal and do the following:
su -l root
export DISPLAY=:0.0
chkconfig tmdns off
chkconfig --del tmdns
service network restart

cat /etc/resolv.conf
Now you should not see the node's ip address or 127.0.0.1
If so, remove them.

Now test if it is still slow.
If still slow, you can disable IPV6

kwrite /etc/modules.conf and add the line
alias net-pf-10 off (note: add a carriage return)
click File->Quit and Save

kwrite /etc/modprobe.conf and add the line
alias net-pf-10 off (note: add a carriage return)
click File->Quit and Save

kwrite /etc/sysconfig/network and add the line
NETWORKING_IPV6=no (note: add a carriage return)
click File->Quit and Save

Now reboot the system with
shutdown -r now

(E-Mail Removed) wrote:
> I have two boxes I use as desktops on my network. One runs Windows XP
> and the Other Mandrake Linux (10.0). The Linux box seems to take a long
> time for DNS resolution while the Windows system is a lot quicker. Is
> there any way to speed this up?
>
What is in your

/etc/resolv.conf file

Mine has something like this

nameserver 69.33.xxx.xxx <- IP Number of DNS
nameserver 69.33.xxx.xxx <- IP Number of DNS
options timeout:1

Thanks a lot. It seems that shutting down IPv6 support really speeds
things up.

On Mon, 16 May 2005 16:37:33 -0700, ryan wrote:

> I have two boxes I use as desktops on my network. One runs Windows XP
> and the Other Mandrake Linux (10.0). The Linux box seems to take a long
> time for DNS resolution while the Windows system is a lot quicker. Is
> there any way to speed this up?

How slow? If it's about 45 seconds you probably have two problems. If it's
about 12 seconds only one.

First disable IPV6 - that will take it from 45 to 12.
Next, put

options timeout:1

in your /etc/resolv.conf file - this will knock the 12 second problem out.

> I have two boxes I use as desktops on my network. One runs Windows XP
> and the Other Mandrake Linux (10.0). The Linux box seems to take a long
> time for DNS resolution while the Windows system is a lot quicker. Is
> there any way to speed this up?

* Mount a DNS-caché server. It's very easy and you problem probably will
desapear.

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