Address of first byte of media header. The first byte of packet data follows the last byte of the media header.
Length of the media header in bytes.
Length of packet data in bytes (not including the media header).
Protocol type. This will be copied into the media header without doing byte swapping. Protocol type numbers can be obtained from the Assigned Numbers RFC 1700.
Source and destination MAC addresses. These will be copied into the media header without doing byte swapping.