nm->icmp_timeout = SNAT_ICMP_TIMEOUT;
nm->tcp_trans_timeout = SNAT_TCP_TRANSITORY_TIMEOUT;
nm->tcp_est_timeout = SNAT_TCP_ESTABLISHED_TIMEOUT;
nm->icmp_timeout = SNAT_ICMP_TIMEOUT;
nm->tcp_trans_timeout = SNAT_TCP_TRANSITORY_TIMEOUT;
nm->tcp_est_timeout = SNAT_TCP_ESTABLISHED_TIMEOUT;