_netlbl_catmap_getnode
iter = _netlbl_catmap_getnode(&catmap, offset, _CM_F_WALK, 0);
iter = _netlbl_catmap_getnode(&catmap, offset, _CM_F_WALK, 0);
iter = _netlbl_catmap_getnode(&catmap, off, _CM_F_WALK, 0);
iter = _netlbl_catmap_getnode(catmap, bit, _CM_F_ALLOC, flags);
iter = _netlbl_catmap_getnode(catmap, offset, _CM_F_ALLOC, flags);