802.3 frame headers
The MAC header for the 802.3 adapter is composed of two fields, as shown in this MAC header table.
|DA||6 bytes||Destination address.|
|SA||6 bytes||Source address. If bit 0 of this field is set to 1, it indicates that routing information (RI) is present.|
The LLC header for 802.3 is the same as for Token-Ring MAC header.