What will happen in something like a wifi connection where different laptops are set with the same MAC address . To make it more interesting what will happen if there are multiple devices with same MAC address and different IP addresses.
closed as off-topic by womble♦ Sep 24 '15 at 6:37
This question appears to be off-topic. The users who voted to close gave this specific reason:
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I had this problem some time ago; there were two ethernet cards with the same MAC address in a 10 stations LAN. In auto configuration mode (DHCP), the first computer to boot would take an address and the second was given the same address by the DHCP server. (The switch was stupid enough to never mind the MAC address conflict). Then, I tried giving the second computer a static IP, but still nothing came out of it. Since it was a LAN, the server was "talking" with the client at the MAC address level and the switch would always pick one client to send the data, seemingly randomly. So, there was no chance of a separation at the IP level on the client side, since the switch randomly disconnected a client from the data flow. Finally, I had to hard code a different MAC address to have a functional network again.
My guess is, if I had a HUB instead of a switch, things might had worked out. Both clients would have received the packets sent from the server and the one with the right IP address would have processed the received data. But since HUBs have been obsoleted by switches for about two decades, I wasn't able to test this scenario.