IPFOBJ_TUNEABLE
obj.ipfo_type = IPFOBJ_TUNEABLE;
error = ipf_inobj(softc, data, NULL, &tu, IPFOBJ_TUNEABLE);
error = ipf_outobj(softc, data, &tu, IPFOBJ_TUNEABLE);
error = ipf_outobj(softc, data, &tu, IPFOBJ_TUNEABLE);
error = ipf_outobj(softc, data, &tu, IPFOBJ_TUNEABLE);