That is easier. I come from a programming background, not a network admin one ;)
I have a related question that has been far at the back of my mind for a few years now:
If we've set dhcp to not overwrite the resolv.conf when it refreshes, what happens if
the nameserver addresses change? Would DNS no longer work?
Just curious,
David
--__--__--
Message: 12
Date: Mon, 16 Jun 2003 17:44:01 -0400 (EDT)
From: Matthew Saltzman <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
Subject: RE: Question on caching-nameserver
Reply-To: [EMAIL PROTECTED]
On Mon, 16 Jun 2003, David Demner wrote:
In future, please wrap your lines, and don't top-post. TIA.
> RH used to use dhcpcd to get an IP address through DHCP, and there was a
> flag for dhcpcd so it didn't replace the resolv.conf, but this doesn't
> appear to be the case any more. They now use dhclient which doesn't
> have this flag.
>
> Poking around, it looks like the script /sbin/dhclient-script is
> responsible for replacing your resolv.conf at startup. The first
> function in the fiel is called make_resolv_conf() and it overwrites the
> resolv.conf. It looks like if you add
>
> echo nameserver 127.0.0.1 >> /etc/resolv.conf
>
> just below the line that reads
>
> echo search $new_domain_name >/etc/resolv.conf
>
> it should work...
>
> Good luck, and of course, YMMV,
Try this simpler fix first. In /etc/sysconfig/network-scripts/ifcfg-eth0,
include the line
PEERDNS=no
You can also set this by editing the interface in redhat-config-network
(AKA neat) and unchecking the box on the "General" tab.
The handling of PEERDNS is done in the ifup and ifup-post scripts.
HTH.
>
> David
>
> -- __--__--
>
> Message: 9
> Organization: Randec
> Subject: Question on caching-nameserver
> To: [EMAIL PROTECTED]
> From: Mufit Eribol <[EMAIL PROTECTED]>
> Date: Sat, 16 Jun 2001 17:18:15 +0300
> Reply-To: [EMAIL PROTECTED]
>
>
> I have a small LAN with a cable modem for internet. I setup up a RH9 box as
> a gateway with IP masq and caching-nameserver.
> Internal PCs use gateway's IP (192.168.0.1) for DNS resolution. It is
> working fine, But...
>
> ...according to docs, the gateway's /etc/resolv.conf should be as follows
>
> search localdomain
> nameserver 127.0.0.1
>
> However, when the machine rebooted, the system picks IPs from ISP and
> /etc/resolv.conf changes to
>
> ; generated by /sbin/dhclient-script
> nameserver ISP_IP1
> nameserver ISP_IP2
>
> How can I make "nameserver 127.0.0.1" line in resolv.conf sticky?
>
> Mufit
>
>
>
--
Matthew Saltzman
Clemson University Math Sciences
[EMAIL PROTECTED]
http://www.math.clemson.edu/~mjs
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