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ICMP header

The following fields are defined for the ICMP header, as described in [RFC792]:

\begin{tabular}{l\vert cccccccccccccccccccccccccccccccc\vert...
\multicolumn{33}{l}{{\tt icmp\_data}} \\

All fields listed above are based on icmp_hdr, which in turn is defined as follows:

field icmp_hdr = ip_nexthdr if ip_proto == IPPROTO_ICMP;

Martin A. Brown 2003-11-06