I recently installed two Linux VMs on my laptop. One, running the latest Ubuntu, got the network interfaces (yes, I have two defined) working as I wanted. The

I recently installed two Linux VMs on my laptop. One, running the latest Ubuntu, got the network interfaces (yes, I have two defined) working as I wanted. The other one, running CentOS 7.9 (because that's what we're stuck with at $JOB) doesn't, with the same network setup. Both are using systemd (something I've tried to avoid as I'm very old school when it comes to Unix administration [1]) and I've yet to figure out what is going on. The set up is easy, first interface, non-NAT, gets address via DHCP. Second interface, NATted through the laptop. CentOS interfaces are completely borked upon boot up, and it takes about 10 minutes of constant enabling/disabling the interfaces to get them "up". Pre-systemd, I might have had a chance to just hard code the network settings (which would work for my setup). These days? I'm feeling more and more computer illiterate as time goes on. [1] I'm a developer who can admin a Unix system if forced to, but how to administrate Unix has changed at least three times since I first learned in the mid 90s, and I'm tired of the constant changes (shakes my old-man fists at the sky).