说明

每次重启网络dns就会被覆盖127.0.0.53，域名就会解析失败。这是systemd-resolvd的问题，直接关闭就行。

vi /etc/resolv.conf
nameserver 8.8.8.8
vim /etc/NetworkManager/NetworkManager.conf 在plugins下面加一行 dns=default 保存然后重启 sudo systemctl restart NetworkManager

然后停止systemd-resolved服务，并关闭开机自启动

systemctl stop systemd-resolved
systemctl disable systemd-resolved