Became the root and check the current configuration:

Check available links:

Let's configure igb0:

and test the link:

How to store it permanently

Create a file /etc/hostname.[iface], i.e. /etc/hostname.igb0 in our example above with follow contains:

Create a file for the default router:

Create a file for the hostname:

And reboot the server to apply the changes (or do it manually as described in the first part)

Assign address using DHCP