Wait for network to be configured (no limit)

In Ubuntu 16.04 or up (ie, post systemd) if you’re ever stuck staring for two straight minutes at “Waiting for network to be configured (no limit)” and despairing, there’s a simple fix:

systemctl mask systemd-networkd-wait-online.service

This links the service that sits there with its thumb up its butt if you don’t have a network connection to /dev/null, causing it to just return instantly whenever it’s called. Which is probably a good idea. There may indeed be a situation in which I want a machine to refuse to boot until it gets an IP address, but whatever that situation MIGHT be, I’ve never encountered it in 20+ years of professional system administration, so…