Re: An equivalent to dhclient.conf's "prepend domain-name-servers"?

Hehe, that is very similar to what I've been doing.  See the link
below, I wrote the post about the script, run from cron, that edits
the resolv.conf file with ed.  I didn't bother with file monitoring
because I wrote it quick and dirty.

I'm really looking for NetworkManager to provide the ultimate solution
so that I can stop having to put so much thought in to this each time
I've got a new machine to set up.

Even if NetworkManager just provided a boolean option to support a
local caching nameserver.  This could be presented in the GUI as "This
system has a caching name server" with a check box.  Default is off.
I would like a way to configure this from the command line but I'm
sure I could figure that out by learning a little more about dbus.

You know what!  I just found in the NetworkManager release notes
(wiki, ReleaseProcess) that "Local caching nameserver support" is
tentatively planned for the 0.8.2 release.  I missed this before.
This is great!  You have my vote for this feature!


On Thu, Jul 29, 2010 at 9:00 AM, Robert Nichols
<rnicholsNOSPAM comcast net> wrote:
> On 07/29/2010 09:33 AM, Carl Baldwin wrote:
>> I have fought with this issue since Ubuntu started using
>> NetworkManager and my dhclient.conf settings stopped working.
>> I use dnsmasq on my machine for several reasons.  I like having a
>> caching nameserver but more importantly I use dnsmasq so that I can
>> set up rules for which upstream servers to contact for certain
>> domains/networks.  I do this because I routinely create VPN tunnels to
>> other networks and there are situations where I set static routes to
>> other networks through non-default gateways.  The bottom line is that
>> I do a few complex things in my network setup so that other things end
>> up being a lot easier.
> Fearless enough to run a helper program?  I've written a C program that
> makes dnsmasq work.  The program sets up a file alteration monitor on
> /etc/resolv.conf.  Whenever that file changes, the code ensures that
> "" is the first nameserver listed there and passes the upstream
> server addresses to dnsmasq.  A short script in
> /etc/NetworkManager/dispatcher.d makes sure this program is running
> whenever a network interface is started.  I believe it's pretty
> bulletproof, and most of its configuration can be overridden from the
> command line.
> Source is available from
> --
> Bob Nichols     "NOSPAM" is really part of my email address.
>                Do NOT delete it.
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