Knowledge Base

I eventually saw that my system didn't have a MAC address for the network card!

$ ip link show ens33 | grep ether
2: ens33: <DOWN>
    link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff

I was getting desperate, and booted into the BIOS and disabled the onboard ethernet card, and rebooted. Then I rebooted into bios again and re-enabled the network card, and then back into the OS, and now my network card was working again!