RAK833 concentrator

Issue: failed to start the concentrator

Setup:

Server:127.0.0.1

Details:Hi, i use the RAK833 with ubuntu(22.04) i placed the RAK833 in the place of the wifi card but every time i try to lunch the packet forwarder (lora_pck_fwd) i have the failed to start the concentrator message or if i change the source folder with the rak_common_for_gateway the packet forwarder lunch but i lost the ip address 192.x.x.x
can you please help me
thank you