/etc/resolv.conf changing [solved]

[javaguy]

I'm using Mandrake 10.1, and my /etc/resolv.conf seems to spontaneously change, adding a search line at the beginning that makes web browsing really slow. I created a cron job to remove the offending line once per hour (it seem to reapear a couple times a day), but that's a silly solution. What exactly is changing my resolv.conf, and how do I stop it from putting in the search line?

 

Thanks!

Sam

[spinynorman]

For the background to this, see this thread (now closed).

[devries]

You need to create a script to tell dhclient not to overwrite resolv.conf. Search the board for one. Or you can make resolv.conf not writable. The command can be found on the board to.

 

Good luck.

[Qchem]

If you're using ext3 as your fs then you can lock the file:

 

chattr +i /etc/resolv.conf

 

 

if you ever need to edit it again, the unsurprising unlock is:

 

chattr -i /etc/resolv.conf

[javaguy]

Solved!

 

I edited the /sbin/dhclient-script and commented out the lines that insert the offending search into my resolv.conf.

 

Thanks!

[Havin_it]

Another method (I prefer this because I have multiple network connections, some needing to update resolv.conf and some not)

 

You can put this directive in /etc/sysconfig/network-scripts/ifcfg-foo (foo=name of your interface, eg 'eth0' for Ethernet connection)

 

PEERDNS=no

 

This stops resolv.conf being overwritten by that connection.

[theYinYeti]

I've read the /sbin/dhclient-script file, and in theory, Havin_it you're right it should be enough to put PEERDNS=no in the config file.

 

But guess what? I've done as much, and still on reboot the /etc/resolv.conf file is reset to its old non-working content!

This evening, I'll see if I have more luck with arctic's suggestion to use pump as a dhcp client...

 

Yves.