NOTE: In ethernet networks, each packet has an
overhead of 24 bytes [preamble (7 bytes), start of freme (1 byte), CRC (4 bytes), and
IFG (12 bytes)]. Such overhead needs to be accounted to the interface traffic, but it is not added to the traffic being exchanged between IP addresses. This is because such data contributes to interface load, but it cannot be accounted in the traffic being exchanged by hosts, and thus expect little discrepancies between host and interface traffic values.
