FreeRTOS-TCP v4.0.0. The protocol stack does not respond to ARP requests, but sends ARP notifications every 30 seconds. I know that sending ARP notifications in 30 seconds is due to the macro definition of “ipconfigMAX-ARP-AGE”, but what is the reason for not responding to ARP requests?
Maybe a problem with your ethernet driver not receiving packets ? Can your verify that the driver receives ethernet frames and forwards them to the stack correctly ?