Basic Work With libpcap - Protocol Parsing - Useful Include Files

#include <sys/types.h>    /* \                                 */
#include <sys/socket.h>   /*  > for inet_ntop and its friends. */
#include <arpa/inet.h>    /* /                                 */
#include <netinet/ip.h>   /* to parse IP headers.  */
#include <netinet/tcp.h>  /* to parse TCP headers. */

Originally written by guy keren