使用webpack-dev-server 访问出错

使用webpack-dev-server 为什么只能用localhost+端口号访问，使用本机ip地址+端口号会出现404？？

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必须输入在启动项目的时候加上--host xxx.xxx.xxx.xxx

我的配置在动的时候是这样配置的

var WebpackDevServer = require("webpack-dev-server");
var webpack = require('webpack');

var compiler = webpack(require("./webpack.config.js"));
var server = new WebpackDevServer(compiler, {
  host:"0.0.0.0",
  hot: true,
  historyApiFallback: true,
  compress: true,
  staticOptions: {
  },  
  publicPath: "/",
  contentBase: './build/',··
  headers: { "X-Custom-Header": "yes" },
  stats: { colors: true }
});

//这里我是绑定所有的ip
server.listen(3000, "0.0.0.0", function() {
    console.log('asdf');
});