IPFW_RCFLAG_SET
rt.flags = IPFW_RCFLAG_SET;
rt.flags |= IPFW_RCFLAG_SET;
rt.flags |= IPFW_RCFLAG_SET;
rt.flags = IPFW_RCFLAG_SET;
IPFW_RCFLAG_SET | IPFW_RCFLAG_DYNAMIC)
if ((rt->flags & IPFW_RCFLAG_SET) != 0 && set != rt->set)
if ((rt->flags & IPFW_RCFLAG_SET) != 0 && rule->set != rt->set)