is_die
PRINTF("\ttag %u ttl %lu", ips.is_tag, ips.is_die - now);
tp->st_age = ips.is_die - ipsstp->iss_ticks;
is->is_die = 1 + ifs->ifs_fr_ticks;
clone->is_die = ONE_DAY + ifs->ifs_fr_ticks;
ipsec->ipsc_state->is_die = nat->nat_age;
ipsec->ipsc_state->is_die = ifs->ifs_fr_ticks + 1;
pptp->pptp_state->is_die = ifs->ifs_fr_ticks + 1;