function ResetIP() {
Network.natFacilitatorIP = "127.0.0.1";
Network.natFacilitatorPort = 10001;
}

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
void ResetIP() {
Network.natFacilitatorIP = "127.0.0.1";
Network.natFacilitatorPort = 10001;
}
}

import UnityEngine
import System.Collections

class example(MonoBehaviour):

def ResetIP():
Network.natFacilitatorIP = '127.0.0.1'
Network.natFacilitatorPort = 10001