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Old 06-18-2010, 11:30 AM   #1
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changed ip cannot reconfigure

I recently attempted to change my ip with terminal using "ifconfig etho <input address>" but failed to annotate the previous address. I restarted the network after appending the network document at "/etc/network/interfaces" and restarted the network "/etc/init.d/network restart". Checking through I found the the IP address was what I changed it too yet the problem was attempting to revert it back.

Going through a cycle of editing the network document and restart the network has ended in failure and I am curious if there is a way to reset the configuration for eth0 without reinstallation.

sincerely:A Newbie
Old 06-18-2010, 11:37 AM   #2
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Hi -

It sounds like you want to configure a "static IP".

It's easy - but the specifics will vary with your particular distro and version, and with whether you prefer a command line or GUI.

Here is a good link:

'Hope that helps .. PSM
Old 06-18-2010, 11:40 AM   #3
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I'm assuming you're using Ubuntu or a similar distribution.

There is no way to "reset the configuration", but the a better question is what is it you're trying to do?

Do you need DHCP?
Example of a simple interfaces file with dhcp config for eth0:
# always need the loopback address configured
auto lo
iface lo inet loopback

# dhcp for eth0
auto eth0
iface eth0 inet dhcp
Do you need a different static address?
Example of a simple interfaces file with static address config for eth0:
# loopback
auto lo
iface lo inet loopback

# eth0 static config
iface eth0 inet static

(lines beginging with a '#' are comments)
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Old 06-18-2010, 12:23 PM   #4
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I think I will try to go back to DHCP until I can figure out the settings but I am having issues get my dhcp settings back.
Old 06-18-2010, 01:10 PM   #5
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I found that I can find my IP address because all the terminals in the house are linked off the same modem but am having issues with the location of the network address,gateway address, and netmask.

Could I get some insight as to where these address may be in linux
Old 06-21-2010, 10:04 AM   #6
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Fixed the problem when I attempted to change the IP to static I disabled DHCP on auto eth0 I created a new connection and named it Ethernet and it was automatically configured. In the future I will try to configure an IP manually in virtualbox before attempting a change to a system. Thank you all for your help


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