NetworkManager sabotages DNS? on fc9
Christoph Höger
choeger at cs.tu-berlin.de
Wed Jul 23 17:23:25 UTC 2008
Am Mittwoch, den 23.07.2008, 10:53 -0600 schrieb Phil Meyer:
> Dave Burns wrote:
> > I just installed fc9 on a Dell precision T5400 from the live CD. On
> > previous fc9 installs, I've had a problem that networking doesn't
> > start at boot if I didn't open up the network panel and check
> > "controlled by networkmanager". On this new install, when I have that
> > box checked, DNS does not work (nslookup times out). If I uncheck that
> > box and disable/enable eth0, DNS starts working. DNS is being served
> > to this machine from another machine.
> >
> > Does NetworkManager get DNS info from DHCP or somewhere else? How
> > could this behavior make sense? Does NetworkManager assume dynamic
> > addressing? I am trying to make it static, could that be the problem?
> >
> > I guess I will experiment with just turning NetworkManager off, since
> > this is a desktop unit not a laptop, has no wireless.
> >
>
> It seems that NetworkManager-0.7.0-0.9.4.svn3675.fc9.i386.rpm has a new
> problem.
>
> This is what happens at home, and is perfectly correct. My router is
> also a caching name server, so that is appropriate.
>
> ---
> # generated by NetworkManager, do not edit!
>
> search localdomain
>
> nameserver 192.168.1.1
> ---
>
> Here is what I get from DHCP at work. This is NEW behaviour.
>
> ---
> # generated by NetworkManager, do not edit!
>
> domain mycorp.com
>
> search localdomain
>
> nameserver 10.1.6.29
> nameserver 10.2.10.6
> nameserver 192.168.1.1
> ---
>
> See the problems?
>
> The 'search' line is now broken. The DHCP response includes valid
> domain, search, and nameserver records. NetworkManager now mangles them
> to give a composite of what it had, with what it received.
>
> The DHCP return packet did NOT contain the 'nameserver 192.168.1.1' entry.
>
> So now every morning when I plug in at work, I have to edit the search
> line. Annoying!
>
Hi,
is that reproducable for you, when you come home and connect again?
I do not see that behavior at work/home.
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