pfctl_add_pool
if (pfctl_add_pool(pf, &r->rdr, PF_RDR))
if (pfctl_add_pool(pf, &r->nat, PF_NAT))
if (pfctl_add_pool(pf, &r->route, PF_RT))
int pfctl_add_pool(struct pfctl *, struct pfctl_pool *, int);