之前修改DNS是非常简单的自从Ubuntu改用systemd作为启动程序后，就不知道往那改变DNS，默认情况你的DNS服务器配置是127.0.0.53即自动查找DNS。在本文中我们将说明怎么找到DNS配置文件，如何修改DNS配置文件，怎么验证DNS是否配置正确。教程适用与Ubuntu 18.04至Ubuntu 20.04怎么找到DNS配置文件如果你尝试修改/etc/resolv.conf文件，你将会看到文件顶部如下提示# This file is managed by man:systemd-resolved(8). Do not edit. # # This is a dynamic resolv.conf file for connecting local clients directly to # all known uplink DNS servers. This file lists all configured search domains. # # Third party programs must not access this file directly, but o