After the reboot, insert CD 2 and go on with the package installation:

After the package installation, you have to provide a password for root:

Now we do the network configuration. Take care to enable SSH:

Then I click on Network Interfaces. On the next screen that appears, under Already Configured Devices, click on Change:

I do not want to get IP addresses from a DHCP server because a server should have static IP addresses so I change this by clicking on Edit:

Select Static Address Setup and enter an IP address (e.g. 192.168.0.100) and a subnet mask (e.g. 255.255.255.0):

Under Host Name and Name Server I set my hostname server1.example.com and enter up to 3 DNS servers (e.g. 145.253.2.75 and 193.174.32.18):

Under Routing I set my gateway (e.g. 192.168.0.1):

Under Advanced -> Additional Addresses you can set additional IP addresses.

I want to create a virtual network card eth0:0 with the IP address 192.168.0.101 (my main one is 192.168.0.100 in this example) so I select Add:

I enter an Alias Name (0), my additional IP address (192.168.0.101) and my netmask (255.255.255.0):

Click on OK:

Then Next:

An overview of my network cards:

Back to the main Network Configuration screen, and the Next:

The network configuration is saved: