DHCP Timed Out problem in simple socket server

IIRC, when you have a blank flash memory, SSS uses a default MAC address or prompts the user to enter it at the console.

IP address is not relevant in your case, since it should be assigned by DHCP server.

I suggest you perform a preliminary test with dhcp disabled, so you can make sure hw and sw are working correctly. I also suggest you return fixed and well known addresses in get_ip_addr() and get_board_mac_addr(), thus excluding a possibly bad flash memory content.