byte mac[] = {

0xDE, 0xCD, 0xAE, 0x0F, 0xFE, 0xED };

// Initialize the Ethernet server library

// with the IP address and port you want to use

// (port 80 is default for HTTP):

void setup() {

// Open serial communications and wait for port to open:

Serial.begin(9600);

while (!Serial) {

; // wait for serial port to connect. Needed for Leonardo only

}

// start the Ethernet connection:

if (Ethernet.begin(mac) == 0) {

Serial.println("Failed to configure Ethernet using DHCP");

// no point in carrying on, so do nothing forevermore:

for(;;)

;

}

// print your local IP address:

Serial.print("My IP address: ");

for (byte thisByte = 0; thisByte < 4; thisByte++) {

// print the value of each byte of the IP address:

Serial.print(Ethernet.localIP()[thisByte], DEC);

Serial.print(".");

}

Serial.println();

// start the Ethernet connection and the server: