and I could also manually bring it up with ifup ppp0 and down with ifdown ppp0. I didn’t find any examples with networkctl. Are there any config files so I don’t need to issue commands after every reboot?
Another optional question about networkctl. Can you rename eth device name . I still do it via /etc/udev/rules.d/70-persistant-net.rules, but I have to reboot machine to be applied. I saw ubuntu has a wonderful solution with /etc/netplan/00-config.yaml and netplan apply
Use the network config panel under the gnome settings. Settings --> Network
From the command line you should now use nmcli which is capable of doing all that ifconfig used to do and more. You also have the ip command with all its functions. The control panel works for most things, including starting and stopping a connection from the gui.