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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]
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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.
