How do I stop the "search blahblah" line? [solved]

[Steve Scrimpshire]

How do I keep the "search blahblah" line from showing up in /etc/resolv.conf? The only reference I can find for the host there is in the router itself.

I have NEEDHOSTNAME=no set in /etc/sysconfig/network-scripts/ifcfg-wlan0

Edited June 5, 2006 by Steve Scrimpshire

[ianw1974]

This is the only thing I can think of:

 

[root@esprit ian]# cd /etc/sysconfig/network-scripts
[root@esprit network-scripts]# cat network-functions | grep search
# Set up a default search path.
if ! grep search /etc/resolv.conf >/dev/null 2>&1; then
	echo "search $domain" >> $rsctmp

 

Maybe commenting these out would stop the line appearing in /etc/resolv.conf, but purely a guess, it's all I can come up with. I use static ip, so I don't get this problem, but believe most likely common to DHCP type connections. Anyway, hope it helps some.

[iphitus]

what's wrong with it being there, and what does it actually do?

 

If your system is getting a different hostname from your connection, this isnt the cause.

[Steve Scrimpshire]

ian: I have already tried commenting that out. It still shows up.

[ianw1974]

what's wrong with it being there, and what does it actually do?

 

If your system is getting a different hostname from your connection, this isnt the cause.

 

As far as I know, the search line is supposed to search your domain name maybe to find a DNS server, or something like that, before it interrogates your DNS entries.

 

I have it configured in mine, because I added it manually, and doesn't seem to cause me any performance issues. Seems to be the same with or without. Another entry configurable, is the same, except replace "search" with "domain". This is required, at least in Gentoo, to ensure the domain name is configured correctly.

 

Steve, I'll see if I can find something else to stop it being entered.

[Gowator]

I have to admit finding this a pain myself. In the end I just set the IP and gw manually and as I posted the following on the kanotix forum Ill just paste it...

.....

However in /etc/dhcp3/dhclient.conf you can edit the

request line to not ask or assign DNS server info

 

request subnet-mask, broadcast-address, time-offset, routers,
	domain-name, domain-name-servers, host-name,

 

and secondly under the lease directives is an option

option domain-name-servers 127.0.0.1;

 

where you can add your ISP's DNS server...

 

I think you can find an option for the search domain too..but you will find it as well as me now you are looking inthe right place I hope... :D

[Qchem]

If you're using ext2 or ext3 as your filesytem you could lock the file: chattr +i /etc/resolv.conf

[Steve Scrimpshire]

Ok, looks like I have it figured out. First, let me say that dhclient is run as a service with the directive that /etc/dhclient-wlan0.conf is the config file:

send host-name "laptop.mdk";  # temporary ifup addition

and I am too afraid to add directives to it...afraid to screw things up. I found this in /sbin/dhclient-script that I commented out and it seems to work:

#  if [ -n "$DOMAIN" ]; then
#	d="search $DOMAIN"
#  elif [ -n "$new_domain_name" ]; then
#	d="search $new_domain_name"
#  fi

 

If this gives me trouble, I may do the chattr option or try m hand at adding some directives to /etc/dhclient-wlan0.conf.

 

Thanks guys!