rpz_synthesize_nxdomain
ret = rpz_synthesize_nxdomain(r, ms, qchase, az);
ret = rpz_synthesize_nxdomain(r, ms, qchase, az);
ret = rpz_synthesize_nxdomain(r, ms, &is->qchase, a);
ret = rpz_synthesize_nxdomain(r, ms, qchase, az);
ret = rpz_synthesize_nxdomain(r, ms, qchase, az);
ret = rpz_synthesize_nxdomain(r, ms, &is->qchase, a);