and fragmentation process is a
logical one; it's used to compute page header values and the original
page data need not be disturbed, even when a packet spans page
boundaries.</p>

<p>The raw packet is logically divided into [n] 255 byte segments and a
last fractional segment of &lt; 255 bytes. A packet size may well
consist only of the trailing fractional segment, and a fractional
segment may be zero length. These values, called "lacing values" are
then saved and placed into the header segment table.</p>

