Hello: When I do a built, the AN271 aplications, leave the following errors Could anyone help? *********************************************************** C:\Keil_v5\ARM\PACK\Keil\MDK-Middleware\6.3.0\Network\Include\net_config.h(130): error: #20: identifier "ETH0_IP1" is undefined {{ETH0_IP1, ETH0_IP2, ETH0_IP3, ETH0_IP4}, ETH0_MAC1, ETH0_MAC2, ETH0_MAC3, ETH0_MAC4, ETH0_MAC5, ETH0_MAC6 C:\Keil_v5\ARM\PACK\Keil\MDK-Middleware\6.3.0\Network\Include\net_config.h(221): error: #20: identifier "ETH0_MAC6" is undefined ETH0_MAC1, ETH0_MAC2, ETH0_MAC3, ETH0_MAC4, ETH0_MAC5, ETH0_MAC6 RTE\Network\Net_Config.c: 0 warnings, 26 errors ".\Objects\MEMS.axf" - 26 Error(s), 15 Warning(s). Target not created. Build Time Elapsed: 00:00:20 Many greetings Carlos