@Olsche respectfully, that is not what I asked. I know the IP interface... it is very nice design wise, and it has settings that web / app interface purposely lack. However, there are things which can't be set up with IP interface like Scenes, Groups, Thermostats, Wallpapers, Icons, Rooms. etc.
All of it can be set up via APP or WEB interface, but they are not the same thing!
Local Wi-Fi Network Control does NOT work in WEB interface when enabled:
Therefore, whatever device has disabled CLOUD it can't be managed with WEB interface unless CLOUD is enabled for that device.
But in mobile APP interface, such a device can be managed even with CLOUD off just fine.
The same device when viewed in WEB shows Device is offline, but in APP is online and manageable locally.