There is currently no native support for the Dirigera hub, see the note in IKEA Trådfri integration documentation → https://www.home-assistant.io/integrations/tradfri/
But even if there were I would still advise to instead use the nativly built-in ZHA integration with a modern (and compatible) Zigbee Coordinator USB dongle → https://www.home-assistant.io/integrations/zha
Personally I suggest buying [ITead’s TI CC2652P based “Sonoff Zigbee 3.0 USB Dongle Plus” (which is now renamed to “ZBDongle-P ”), → ITead's "Sonoff Zigbee 3.0 USB Dongle Plus" (model "ZBDongle-P") based on Texas Instruments CC2652P +20dBm radio SoC/MCU
PS: If going to use Zigbee then recommend that you read and try to follow all the tips here regardless of which Zigbee gateway solution you choose → Zigbee networks: how to guide for avoiding interference and optimize for getting better range + coverage