thank you very much!

Hello,
I created an ESP8266 Wifi gateway and everything is working very well.
Now I need to create a node: mi question is... what the directive to say to the node who is its gateway?
Or every ESP8266 has to be a gateway for itself?

I'm using Openhab2.

This is my sketch, what I'm missing, please? My gateway as 192.168.0.95 as IP address

// Enable debug prints to serial monitor
#define MY_DEBUG

// Use a bit lower baudrate for serial prints on ESP8266 than default in MyConfig.h
#define MY_BAUD_RATE 9600

// Enable and select radio type attached
//#define MY_RADIO_RF24
//#define MY_RADIO_NRF5_ESB
//#define MY_RADIO_RFM69
//#define MY_RADIO_RFM95
//#define MY_GATEWAY_ESP8266

#define MY_WIFI_SSID "xxxx"
#define MY_WIFI_PASSWORD "xxx"

// Enable MY_IP_ADDRESS here if you want a static ip address (no DHCP)
#define MY_IP_ADDRESS 192,168,0,88

// If using static ip you can define Gateway and Subnet address as well
#define MY_IP_GATEWAY_ADDRESS 192,168,0,1
#define MY_IP_SUBNET_ADDRESS 255,255,255,0

// Flash leds on rx/tx/err
// Led pins used if blinking feature is enabled above
#define MY_DEFAULT_ERR_LED_PIN 16 // Error led pin
#define MY_DEFAULT_RX_LED_PIN 16 // Receive led pin
#define MY_DEFAULT_TX_LED_PIN 16 // the PCB, on board LED

#define MY_NODE_ID 1

#if defined(MY_USE_UDP)
#include <WiFiUdp.h>
#endif

#include <ESP8266WiFi.h>
#include <MySensors.h>
#include <ArduinoOTA.h>

#define RELAY1 12
#define RELAY2 13

#define RELAY_ON 1 // GPIO value to write to turn on attached relay
#define RELAY_OFF 0 // GPIO value to write to turn off attached relay

void before()
{
pinMode(RELAY1,OUTPUT);
pinMode(RELAY2,OUTPUT);
digitalWrite(RELAY1, loadState(RELAY1)?RELAY_OFF:RELAY_ON);
digitalWrite(RELAY2, loadState(RELAY2)?RELAY_OFF:RELAY_ON);
}

void setup()
{
}

void presentation()
{
// Send the sketch version information to the gateway and Controller
sendSketchInfo("LuciFinestrone", "1.0");

present(RELAY1, S_BINARY, "luceFinestrone",true);
//present(RELAY2, S_BINARY, "light2",true);

}

void loop()
{
}

void receive(const MyMessage &message)
{
// We only expect one type of message from controller. But we better check anyway.
if (message.type==V_STATUS) {
// Change relay state
digitalWrite(message.sensor, message.getBool()?RELAY_ON:RELAY_OFF);
// Store state in eeprom
saveState(message.sensor, message.getBool());
// Write some debug info
Serial.print("Incoming change for sensor:");
Serial.print(message.sensor);
Serial.print(", New status: ");
Serial.println(message.getBool());
}
}