arg(i) + "\n"; } server.send(404, F("text/plain"), message); digitalWrite(led, 0); } void initEthernet() { #if USE_ETHERNET_GENERIC ET_LOGWARN(F("=== USE_ETHERNET_GENERIC ===")); #elif USE_ETHERNET_ENC ET_LOGWARN(F("=== USE_ETHERNET_ENC ===")); #...