NMState

Over the past few years there have been quite a few changes in how day one (or perhaps more accurately, deployment-time, since they also apply to scaleout operations on day two) networking functions. This particular phase of networking is especially tricky because cluster resources are not, for the most part, available yet. This means you can't use any of the normal operators that handle network configuration later in the deployment process.

Oh my.
-George Takei

Mostly writing this down so Google knows about it the next time I search. On a fresh VM I tried to use NMState to apply a configuration that included OVS bridges and interfaces. This failed with the error libnmstate.error.NmstateDependencyError: Open vSwitch support not properly installed or started. I had installed and started OVS, so I was very confused. I vaguely recalled that there was an integration package for NetworkManager, but a dnf search openvswitch turned up nothing.