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Old 07-25-2012, 01:45 AM   #1
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Registered: Jul 2012
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Ubuntu LTS After reboot, no DNS

Hi All,
Recently i started building my own webserver.
Setup: Ubuntu LTS 12.04, webmin, virtualmin, apache
After installing Ubuntu, webmin and virtualmin, I made a reboot.

After this reboot, DNS lookups are impossible.
After i add nameservers to: /etc/resolv.conf, dns lookups are working again, offcourse, until the next reboot.
If i look in my dns settings in webmin, everything seems to look fine.

Does anyone have an idea what is going wrong?
Old 07-25-2012, 02:21 AM   #2
Registered: Mar 2011
Location: Rome - Italy
Distribution: Slackware 13.1
Posts: 347

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Rebbot the system, then check your configuration with:
sudo ethtool eth0
(maybe you have some daemon setting your network interfaces automatically, so you need to change this behaviour.)
If you don't have ethtool installed then
sudo apt-get install ethtool
Anyway, you can even check your configuration by
cat /etc/network/interfaces

Last edited by Slackyman; 07-25-2012 at 02:23 AM.
Old 07-25-2012, 02:36 AM   #3
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Registered: Jul 2012
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Thanx for your reply;
I tried your option:
sudo ethtool eth0
sudo: ethtool: command not found

The second option you gave me:

dns-nameservers 62.X.X.X 62.X.X.X
post-up iptables-restore < /etc/iptables.up.rules
# dns-* options are implemented by the resolvconf package, if installed

I fixed it now with the following:
sudo nano /etc/resolvconf/resolv.conf.d/base
addded nameservers

IS this the right solution? Any disadvantages?
Old 07-25-2012, 06:54 AM   #4
Registered: Jan 2010
Distribution: Debian, Centos, Ubuntu, Slackware
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They've made changes. In fact I don't like it.
Old 07-25-2012, 12:28 PM   #5
Registered: Mar 2011
Location: Rome - Italy
Distribution: Slackware 13.1
Posts: 347

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That F*****G /etc/resolvconf/resolv.conf.d/base is one of the thousands of reasons why someone says "Learn Ubuntu and you'll know Ubuntu. Learn Slackware and you'll know Linux".
I don't like the Ubuntu way neither the Debian style since they're "customizing" too much things.
I don't use Ubuntu since its 10.4 version.
Old 07-25-2012, 02:41 PM   #6
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Registered: Aug 2011
Location: Tampa, Florida
Distribution: Ubuntu
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It looks like you fixed this issue already. But I wanted to let you know on some of the newer linux distro's you have to add the nameservers along with your IP address configuration instead of the resolve.conf file.


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