Well, they support it for better or worse, you can upgrade from version 17 to 18 since they don't use systemd, on Ubuntu if you go from 14.04 to 16.04 you shoul

Well, they support it for better or worse, you can upgrade from version 17 to 18 since they don't use systemd, on Ubuntu if you go from 14.04 to 16.04 you should do clean install.