Honored Contributor
Honored Contributor<div class='quotetop'>QUOTE </div>
--- Quote Start --- when I made a little change of the software example of telnet_server in IDE,afert build and program,the result was : Telnet Server starting up Your Ethernet MAC address is 00:07:ed:ff:34:56 [tcpip_init_done]fatal:Can't add ethernet interface! I don't know the reason why,the host and the subject board were in communication,but the host can transiant data package,but not receive data package,can you help me ?THANKS![/b] --- Quote End --- Would I be right in assuming that you tested the example before making your "little change" and it worked? If so I suspect the "little change" is your problem. If not then you should concentrate on getting the unmodified example to work. The Can't add ethernet interface implies that the function lwip_devices_init is failing, you should step through this function to find out why.
