I'm trying to understand the IEEE frames. 802.11 frames have four MAC address fields: The source (original creator of the frame), destination (ultimate destination of the frame), transmitter (the last station to transmit it) and receiver (the next immediate receiver of the frame on its way to the destination).
But 802.3 frames only have two MAC address fields: source and destination. Why is that? Why don't stations connected via Ethernet need to know the previous station that sent a frame?
Thanks for any help.