I'm not an ubuntu user (debian testing here). I remember that various systemd-thingies were actually tweaking some network settings behind NetworkManager's bac

I'm not an ubuntu user (debian testing here). I remember that various systemd-thingies were actually tweaking some network settings behind NetworkManager's back. Getting NetworkManager to work properly was a matter of disabling all that systemd stuff and then setting it up using config files and nmcli (the gnome GUI just broke everything too easily). My impression after all that was that NetworkManager is a very capable piece of software littered with bad interfaces and impenetrable documentation. You will emerge victorious if you fight those hard enough. In contrast, trying to setup the system using the various systemd-thingies got me to "xxx is planned but not working now" every time. Btw, I do have a weird complicated network configuration because I'm switching between ethernet and wifi, and have multiple bridged and/or routed vms/containers (with all of kvm, lxc, and virtualbox).