<map id="ip_packet" name="ip_packet">
<area shape="rect" id="node1" title="Structure for an IP packet." alt="" coords="257,197,341,224"/>
<area shape="rect" id="node2" title=" " alt="" coords="5,5,84,32"/>
<area shape="rect" id="node3" title=" " alt="" coords="109,5,183,32"/>
<area shape="rect" id="node4" title=" " alt="" coords="274,5,325,32"/>
<area shape="rect" id="node5" title=" " alt="" coords="425,5,491,32"/>
<area shape="rect" id="node6" title=" " alt="" coords="516,5,608,32"/>
</map>
