ISS_NSEC_SHT
new_iss += (prom_gettime() >> ISS_NSEC_SHT) + 1;
tcp->tcp_iss += (prom_gettime() >> ISS_NSEC_SHT) + tcp_random();
tcp->tcp_iss += (gethrtime() >> ISS_NSEC_SHT) + tcp_random();
new_iss += (gethrtime() >> ISS_NSEC_SHT) + answer[0];
new_iss += (gethrtime() >> ISS_NSEC_SHT) + 1;