Ubuntu禁用systemd-resolved的方法

1、禁用并停止systemd-resolved的服务：

sudo systemctl disable systemd-resolved.service
sudo systemctl stop systemd-resolved

2、在/etc/NetworkManager/NetworkManager.conf文件的[main]中添加下面一行：

dns=default

3、删除链接：/etc/resolv.conf

rm /etc/resolv.conf

4、重启network-manager

  sudo service network-manager restart