IP address is wrong? /etc/hosts not working

**HyperHacker** · January 9th, 2011

I meant since I'm not using wireless networking, network-manager doesn't seem to be doing me any good anyway - just an icon in my notification tray taking up space. (That would be where I'd go to select a wireless network...)

I followed those instructions and got an interesting error:

$ sudo /etc/init.d/networking restart
* Reconfiguring network interfaces...
Ignoring unknown interface eth0=eth0.
Ignoring unknown interface eth0=eth0.

**bab1** · January 9th, 2011

Originally Posted by HyperHacker

I meant since I'm not using wireless networking, network-manager doesn't seem to be doing me any good anyway - just an icon in my notification tray taking up space. (That would be where I'd go to select a wireless network...)

I followed those instructions and got an interesting error:

Code:

$ sudo /etc/init.d/networking restart
* Reconfiguring network interfaces...
Ignoring unknown interface eth0=eth0.
Ignoring unknown interface eth0=eth0.

It appears you are still trying to start the networking through Network Manager. See here . Did you actually remove the Network Manager package?

Normally you would remove the package with this command

Code:

sudo apt-get purge network-manager

You can also just use the Synaptics package manager. Mark for complete removal when you do this.

Can you post the content of the 3 files you directly modified?

**HyperHacker** · January 9th, 2011

Well, the article didn't mention removing network-manager entirely (only update-rc removing its startup entry), but I tried that and restarted and that completely disabled networking until I managed to get the package from another machine and reinstall it.

The only file I've modified is /etc/hosts, posted above.

**cariboo** · January 9th, 2011

Why do you have 127.0.1.1 commented out? Remove the hash mark, and things should work.

**bab1** · January 10th, 2011

Originally Posted by cariboo907

Why do you have 127.0.1.1 commented out? Remove the hash mark, and things should work.

The OP does have a legit loopback address in the /etc/hosts file. See in green below:

Code:

#127.0.0.1	mercury	localhost.localdomain	localhost
#127.0.0.1	mercury	localhost.localdomain	localhost
127.0.0.1	mercury	localhost.localdomain	localhost

**bab1** · January 10th, 2011

Originally Posted by HyperHacker

Well, the article didn't mention removing network-manager entirely (only update-rc removing its startup entry), but I tried that and restarted and that completely disabled networking until I managed to get the package from another machine and reinstall it.

The only file I've modified is /etc/hosts, posted above.

It is okay if you just want to disable Network Manager, rather than removing it. You then need to manually configure the interfaces.

You can manually configure the IP addressing by editing the /etc/network/interfaces file. You also need to configure the IP addresses of the DNS server(s) you are going to use by manually editing the /etc/resolv.conf file. Once you have done this you will want to map host names to IP addresses with the /etc/hosts file.

When you have done the configuring the interfaces you can cycle the interfaces with this

Code:

ifdown -a
ifup -a

This will down the interfaces listed in /etc./network/interfaces and then bring them up again with the new configuration.

Here is a similar explanation.

If you have questions, ask before you modify the files. Once again: If you post the outputs of those 3 files I will give you working examples.