pfr_setflags_ktable(kt, 0, PFR_TFLAG_REFERENCED);
pfr_setflags_ktable(kt, kt->pfrkt_flags&~PFR_TFLAG_REFERENCED);
pfr_detach_table(struct pfr_ktable *kt){	if (kt->pfrkt_refcnt <= 0)		printf("pfr_detach_table: refcount = %d\n",		    kt->pfrkt_refcnt);	else if (!--kt->pfrkt_refcnt)		pfr_setflags_ktable(kt, 0, PFR_TFLAG_REFERENCED);}