pcap_dump - write a packet to a capture file
#include <pcap/pcap.h>
void pcap_dump(u_char *user, struct pcap_pkthdr *h,
u_char *sp);
pcap_dump() outputs a packet to the ``savefile'' opened with
pcap_dump_open(3). Note that its calling arguments are suitable for use
with pcap_dispatch(3) or pcap_loop(3). If called directly, the
user parameter is of type pcap_dumper_t as returned by
pcap_dump_open().