Cannot configure Ethernet on Leonardo R3 ETH

Hello, I cannot configure Ethernet on Leonardo R3 ETH with simple example !
It always return 0.172.172.172
I use Gui on windows 1.81, or on linux 2.1.0.5 or webeditor recently.
What’s wrong ?

#include <SPI.h>
#include <Ethernet.h>

// the media access control (ethernet hardware) address for the shield:
byte mac = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
//the IP address for the shield:
byte server = { 192, 168, 1, 177 };
byte dnse = { 192, 168, 1, 1 };
byte gateway = { 192, 168, 1, 1 };
byte subnet = { 255, 255, 255, 0 };

void setup()
{
Serial.begin(9600);// while the serial stream is not open, do nothing:
while (!Serial) ;
delay(5000);
Ethernet.begin(mac, server, dnse, gateway, subnet);
Serial.print("server is at ");
Serial.println(Ethernet.localIP());
}

void loop () {
delay(5000);
Serial.print("server is at ");
Serial.println(Ethernet.localIP());
}

That is a w5500 IC, so you must use a library compatible with the w5500. Go to Sketch->Include Library->Manage Libraries Add Ethernet2 library.