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To change the IP address and DNS configuration please click on the network symbol on the top right menu bar, expand the "Wired ..." section and click Wired Settings.
Alternatively, you can open the settings menu (Right-click on the desktop or Applications/Activity menu) and go to the "Network" section.
In the "Wired" section, click the cogwheel to edit network parameters:
Go to the IPv4 Settings tab and select Manual from the Method drop down menu to configure the network settings as required:
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