Ceph RDMA setting for public/cluster network

Hi all, Does anyone know how to set "ms_async_rdma_device_name" for OSD in ceph.conf in production environment? When deploying Ceph, it’s better to isolate public & cluster network. For OSD daemon, public & cluster network use different configuration means that they need use different rdma device. Then, how could we set different rdma device name under same [OSD.x] section? Could we only set same “ms_async_rdma_device_name”, which means public & cluster network use same rdma device, when deploying Ceph with RDMA? Regards, Changcheng