DOKK / manpages / debian 12 / libnvme-dev / nvme_id_ctrl_fcatt.2.en
libnvme(2) API Manual libnvme(2)

enum nvme_id_ctrl_fcatt - This field indicates attributes of the controller that are specific to NVMe over Fabrics.

enum nvme_id_ctrl_fcatt {
NVME_CTRL_FCATT_DYNAMIC

};

If cleared, then the NVM subsystem uses a dynamic controller model. If set, then the NVM subsystem uses a static controller model.
enum nvme_id_ctrl_fcatt January 2023