I've followed/looked at several guides (like this one) on how to do the above. My problem is that no static IP is getting assigned to the built-in ethernet port. I have run Code: netplan apply several times. I've also rebooted the PC and still no luck. I am sure the ethernet port works as I was previously using it on Ubuntu 16.04 just before I decided to fresh install 18.04.2. Any ideas what I could be doing wrong? I am going to use the ethernet port to connect my main PC to the Ubuntu server via a crossover cable. If I set the ethernet port to use Code: dchp4:true and connect an ethernet cable from it to my modem/router and disable my WiFi card (by removing the netplan config), the PC can connect to the net without any issues. Thanks Edit: I had a look at /run/systemd/network/config-file-here and it looks correct to me. At the very least representative of the contents of the YAML file. /run/systemd/network folder was mentioned in the netplan website troubleshooting page. --------------------------- This is the output of Code: netplan --debug apply which also shows the contents of my YAML files. I have tried with and without dhcp4/dchp6/gateway4/renderer.