A screenshot of what you are referring to might help us help you better. AFAIK you cannot remove the available hosts information, if that is what you are asking. The webUI should have a remove feature to remove any WOL hosts you have configured. Also, manual WOL input box should clear if you clear your cache or CTRL+F5. If not, then that is something in the webUI that can't be changed, just like the commands box. It shouldn't remain if you close the browser, clear cache, and re-login to webUI.
No, not referring to the available hosts information. Attaching Screenshot.
I tried clearing it in a new browser after clearing all cache and logging back in again. Doesn't seem like it can be cleared. I can add another MAC, IP and Port but, then that persists too.
They should set themselves next time in the webUI or possibly on reboot. You shouldn't need to reset them with blank variables, necessarily. I think that is just the nature of this feature, that you can't remove that information without clearing out the nvram variables manually.
That's fine. I think the "problem" is that the WebGUI won't allow you to click the Manual Wake Up button without entering a valid MAC address and I assume that's the case for other two fields as well. It pops up an alert, so one can't leave those fields blank once values have been set and you can't make use of the button, since it requires valid values.
Clearing out the field manually and using the save and or apply (instead of the Manual Wake Up button) doesn't do anything either. So it is what it is.
Anyway, thanks again for your help!
P.s. I'll try to remember this is Linux and I can nvram show and grep things lol.