The low-order 32 bits of the IP address determine the multicast Ethernet address. The first four bits are always 1 1 1 0 and the next five bits can be anything. Therefore, the IP multicast addresses that map to the multicast Ethernet address of 01 00 5E 00 40 0C are
1110 0000 0000 0000 0100 0000 1100 = 224.0.64.12
1110 0000 1000 0000 0100 0000 1100 = 224.128.64.12
1110 0001 0000 0000 0100 0000 1100 = 225.0.64.12
