I have a smarthome server which I call James, which I so far only want available for users connected to the house LAN somehow. If I connect to the LAN through the wifi on the same router as James is hardwired to, I can open https://james/index.html
But I need wifi-extenders in my house. I have one connected with wire from the main router. If I connect with wifi to this router, my PC can't find James anymore!
What do I need to do where to make this work? I do _not_ want to do anything on the client pc, since this should work for any pc that connects to the LAN without further configuration.