ESP32: WiFi UDP second since boot

#include <WiFi.h>
#include <WiFiUdp.h>

/* WiFi network name and password */
const char * ssid = "HUAWEI-1A73";
const char * pwd = "52408495";

// IP address to send UDP data to.
// it can be ip address of the server or 
// a network broadcast address
// here is broadcast address
const char * udpAddress = "192.168.8.100";
const int udpPort = 44444;

//create UDP instance
WiFiUDP udp;

void setup(){
  Serial.begin(115200);
  
  //Connect to the WiFi network
   WiFi.begin(ssid, pwd);
  Serial.println("");  

  // Wait for connection
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.print("Connected to ");
  Serial.println(ssid);
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());
  //This initializes udp and transfer buffer
  udp.begin(udpPort);
}  

void loop(){
  //Send a packet
  udp.beginPacket(udpAddress,udpPort);
  udp.printf("Seconds since boot: %u\n", millis()/1000);
  udp.endPacket();
  //Wait for 1 second
  delay(1000);
}