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Hosting这个页面里： 我用的是国内的电信上网, 查到了自己的外网IP,输入到host一栏里，结果报错了，说Host Unreachable 这个咋整？
检查下路由器，端口有没映射
需要有公网ip，联系运营商确认。然后路由器要有端口映射