if (libnet_write(l) < 0)
warn("write");
fprintf(stderr, "%s R %lu:%lu(0) win 0\n", ctext, seq, seq);
fprintf(stderr, "%s R %u:%u(0) win 0\n", ctext, seq, seq);
}
struct pcap_pkthdr *h;
u_char *d;
const u_char *d;
int rc;
while ((rc = pcap_next_ex(p, &h, &d)) == 1) {
tt = h->ts.tv_sec;