Ubuntu supports configuring of DHCP interfaces via using a GUI, or by modifying the interfaces file directly. Make sure to automatically initialize the interface on boot time, then ensure it uses DHCP. Begin by editing the interfaces file:
root@computer:~# vi /etc/network/interfaces
Then add
auto eth1 iface eth1 inet dhcp
Note that you will need to specify the interface you want to use for this. If you want a full list of possible interfaces you can do
root@computer:~# ifconfig -a
After the file is adjusted to the way you want it, make sure to restart the networking service for your settings to take effect.
root@computer:~# /etc/init.d/networking restart
After this is complete, verify your settings using “ifconfig -a” once again.
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