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The interface eth0 is your first network interface...The error message is being displayed because your machine's network hasn't been configured and the service is started during boot.
Now depending upon your wish, you can configure the network interface or remove it from startup.
1. To configure your network interface eth0, log in as root and give the following command
This will open up a window where you will specify an IP Address, Subnet Mask, Gateway and Nameserver's (DNS Server's) IP Address. You may just assign an IP Address and Subnet Mask to your machine and leave the other two settings blank.
After you assign the new values, just give the following command as root
service network restart
2. If you do not want your machine to have an IP address and want to disable this network interface then give the following command
From the list of services, deselect network and from next time your network will not start during boot time.
Alternatively, you can change the value
in the file
Your profile shows mandrake as your distro, so your interface file may be located at a different place.....All the above commands are used in Red Hat Linux 9, and should run on your system too...