Switching with items of the same mac addresses

Hi,

I'm in need of a device which can switch to several items which has the same mac address. I heard that there may be devices that can handle this, by for example mapping fake unique mac addresses in the switch to each on of the same mac addresses on the devices, so when you try to send something to a "device with the same mac address" you send it to the faked address in the switch and the switch just forwards it.

Does anyone know anything of this?

Regards,
Tobias

Can you explain a bit more about the need to do this, and what your end goal is? Is there a particular reason you have multiple devices using the same mac address?