Пример использования ETHERTYPE_IPV6
:
static u_int16_t ether_packet(u_char *args, const struct pcap_pkthdr *pkthdr, co
nst u_char *p) {
struct ether_header *eptr = (struct ether_header*)p;
assert(pkthdr->caplen <= pkthdr->len);
assert(pkthdr->caplen >= sizeof(struct ether_header));
return eptr->ether_type;
}
// This is the callback. assumes ethernet frame.
static void pcap_callback(u_char *args,const struct pcap_pkthdr* pkthdr,const u_
char* p)
{
const u_int16_t type = ether_packet(args, pkthdr, p);
switch (ntohs(type)) {
case ETHERTYPE_IP:
// handle IPv4
break;
case ETHERTYPE_IPV6:
// handle v6
break;
}
}