Stupid DNS queries

From: theking (nospam_at_nowhere.com)
Date: 05/12/05 

Date: Thu, 12 May 2005 20:41:46 +0200

Hello,

I have a linux box on a local network
This is a redhat 8
There is no DNS server on the linux, nor on my local network, so the
/etc/resolv.conf has the DNS servers of my ISP.

My problem : this stupid box makes stupid reverse DNS queries when I
connect to it (for example with telnet) from a machine on my network
whitch is not known in its /etc/hosts file.
This makes my gateway connecting uselessly to internet !
And I don't want add all names of machines on my network in all hosts
files.

My questions :
1) I suppose linux wants to know the name of the machine whitch connects
to it, to put the name in a log, am I right ?
2) Can I disable this name lookup ?
3) The most interesting : why this system makes DNS queries for machines
which are on the local network ? I have not found in
redhat-config-network the same option as in windows : "don't use DNS for
local addresses"
Note : the local network address and mask are correctly set.

Thanks

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