How to permanently save nameservers? [Solved]

[chasha420]

Sup guys, a while back I had issues with Network manager applet & magically it just disappeared...never to return again Lol.

So I gave up on trying to get it back & went for 'dhcpcd' & it seems pretty nice in getting leases, & it's quite simple to use, even simpler to assign a fixed ip & a cloned mac addresses, etc.

Anyway the main problem that I face now is let's say I suspended my computer & when the network comes up back again sometimes I lose the saved nameservers in "/etc/resolv.conf". By the way my computer has trouble resolving DNS on it's own so I have to supply OpenDNS nameservers to the config.

So the point is how do I make sure my nameserver configuration doesn't change? I've heard of stuff like making the resolv.conf file write protected but that didn't help so far

Let me know what can be done.

Thanks!

[joost]

Preserving changes to resolv.conf
NetworkManager will attempt to write DNS information from DHCP into /etc/resolv.conf, overwriting the existing contents. To prevent this, you can set the immutable bit on the file (as root):

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# chattr +i /etc/resolv.conf

To modify the file in the future, first remove the immutable bit:

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# chattr -i /etc/resolv.conf

https://wiki.archlinux.org/index.php/Ne ... esolv.conf

[chasha420]

Thanks @joost....but this is what I get

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# chattr +i /etc/resolv.conf
chattr: Operation not supported while reading flags on /etc/resolv.conf

Not sure what to do

[joost]

Not sure, Google?

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lsattr /etc/resolv.conf

[chasha420]

Google didn't help much...anyway if there's any other alternative way pls let me know.

Thanks.

Edit:
Also I get the same error with lsattr

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lsattr /etc/resolv.conf
lsattr: Operation not supported While reading flags on /etc/resolv.conf


Also I find it quite funny how the word "While" starts with capital letter in the middle of a sentence. Pretty good engrish

[joost]

Anyway on MY Sabayon system at my work I had the same problem and I resolved it like this without any problem.

Not sure why you are getting this. (I don't use chattr that often)

[joost]

aha!

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xbox-360 etc # ls -l resolv.conf
lrwxrwxrwx 1 root root 26 Mar 10 15:22 resolv.conf -> resolvconf/run/resolv.conf
xbox-360 etc # lsattr resolvconf/run/resolv.conf
-------------e- resolvconf/run/resolv.conf

resolv.conf is a link to a file at a different location!
At my work it isn't like that.

So try it like this:

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chattr +i /etc/resolvconf/run/resolv.conf

Edit: while at this I read in the manual:

A file with the `i' attribute cannot be modified: it cannot be deleted or renamed, no link can be created to this file and no data can be written to the file. Only the superuser or a process possessing the CAP_LINUX_IMMUTABLE capability can set or clear this attribute.

So I'm not sure if you need to remove the link first, but give it a shot.

[chasha420]

Thanks man...changing attribute of the file to immutable @ /etc/resolvconf/run/resolv.conf did the trick!