iph = (struct ip *)(ptr + sizeof(u_int32_t));
switch (iph->ip_v) {
case 6:
*af = AF_INET6;
*af = htonl(AF_INET6);
break;
case 4:
default:
*af = AF_INET;
*af = htonl(AF_INET);
}
#endif
-