The Network Manager
default for the Ubuntu distribution of Linux operating systems provides internet connectivity. The Network Manager cannot save a fixed IP address on Ubuntu Linux and the settings are lost when the system is rebooted. To have a static IP address on Ubuntu Linux
,the Network Manager must be uninstalled before the network interfaces are configured manually. The network interfaces can be configured to have a static IP in Ubuntu Linux
by editing the interfaces file to include the fixed IP address
. The configuration would be retained even after the Linux system has been restarted.
NetworkManager is a program in Ubuntu 8.10, which aims to provide a simplified Internet connection. NetworkManager finds and maintains an internet connection at all costs. However it can cause a problem if you want to use a fixed IP address. Settings made in NetworkManager will not be applicable at the next restart. Ultimately if you assign a fixed IP address in NetworkManager, this setting will be forgotten the next time you reboot.
A straightforward approach is to uninstall NetworkManager:
- Modify the following file: /etc/networks/interfaces.
- keep the following lines
iface lo inet loopback
iface eth1 inet static
iface eth0 inet dhcp
- If you want to make use of specific DNS, modify the following file
- Note that if you are using DHCP on one of your interfaces, the contents of this file will be overwritten by the DHCP client.
- To force the DHCP client to use a specific DNS, edit the file
- Add the following line:
- DNS returned by DHCP will be added after the DNS you specified.