UDP header

The following fields are defined for the UDP header, as described in [RFC768]:

$$\begin{tabular}{l\vert cccccccccccccccccccccccccccccccc\vert... ...e{2-33} \multicolumn{33}{l}{{\tt udp\_data}} \\ \end{tabular}$$

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

field udp_hdr = ip_nexthdr if ip_proto == IPPROTO_UDP;