Here you can find the source of getLocalAddrs()
static public InetAddress[] getLocalAddrs() throws UnknownHostException
//package com.java2s; /*/*from www . j av a 2 s .c o m*/ * ISABEL: A group collaboration tool for the Internet * Copyright (C) 2009 Agora System S.A. * * This file is part of Isabel. * * Isabel is free software: you can redistribute it and/or modify * it under the terms of the Affero GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * Isabel is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * Affero GNU General Public License for more details. * * You should have received a copy of the Affero GNU General Public License * along with Isabel. If not, see <http://www.gnu.org/licenses/>. */ import java.net.*; public class Main { static public InetAddress[] getLocalAddrs() throws UnknownHostException { // Primero sacamos el nombre de la maquina String host = InetAddress.getLocalHost().getCanonicalHostName(); // Ahora cogemos todas las ips return InetAddress.getAllByName(host); } }