To access the Installation Console, you need to manually set the IP address of your computer to 169.254.0.2.
To change the computer’s IP address in Ubuntu Desktop edition, start the Unity Dash and look for “Network Connections”
Next select the active wired connection and click the “Edit” button:
In the newly opened window, select “IPv4 Settings” tab. This is where you edit the settings for IP version 4. Then in the dropdown menu next to “Method” select “Manual“:
Now click the “Add” button and enter your IP address settings:
You can now hit the “Save” button to apply the changes. If your computer previously used dynamic IP address, you will now need to reconnect to your network so the static IP address can be set. This can be done by using the “connection” setting in the top right corner: