You may recognize it, your production Home Assistant machine has hardware connected that you do not have on your development instance but you are developing something for that hardware.
My use case: I have a Home Assistant production machine in the meter cupboard, which is connected to the P1 meter with a wire. While I am working on my laptop in the garden, I am developing a custom integration using the entities from the P1 meter integration (DSMR Smart Meter integration).
I came across this practical problem and came up with a solution by broadcasting the entities of that hardware over my LAN. That way I have the same entities at my disposal everywhere and I can develop with real live data.
Does something like this not already exist or can it be done more simply using node red or something?