[Arduino IDE demo source code for KC868-A16]--#11-KC868-A16_Ethernet_Web_server_code

[tonbor]

This will not work because your code is wrong.
change -> ETH.begin(ETH_ADDR, ETH_POWER_PIN, ETH_MDC_PIN, ETH_MDIO_PIN, ETH_TYPE, ETH_CLK_MODE); //wrong
in
ETH.begin(ETH_TYPE, ETH_ADDR, ETH_MDC_PIN, ETH_MDIO_PIN, ETH_POWER_PIN , ETH_CLK_MODE); //right
And the code will compile