ire_blackhole
ire = ire_blackhole(ipst, B_TRUE);
ire = ire_blackhole(ipst, B_TRUE);
ire = ire_blackhole(ixa->ixa_ipst,
ire = ire_blackhole(ipst, B_FALSE);
ire = ire_blackhole(ill->ill_ipst, ill->ill_isv6);
extern ire_t *ire_blackhole(ip_stack_t *, boolean_t);