如何将 DNS 设置重置为默认值？

Question

在学习 DNS 的过程中，我安装了太多 BIND 和 DNSmasq 等应用程序并对 /etc/resolve.conf 进行了一些更改

现在我想将 DNS 设置重置为默认值？我已经删除了 DNSmasq 和我记得的东西，但是有没有办法将 DNS 设置重置为默认值而不是重新安装系统？

Answer 1

首先，您的 /etc/systemd/resolved.conf 应如下所示：

#  This file is part of systemd.
#
#  systemd is free software; you can redistribute it and/or modify it
#  under the terms of the GNU Lesser General Public License as published by
#  the Free Software Foundation; either version 2.1 of the License, or
#  (at your option) any later version.
#
# Entries in this file show the compile time defaults.
# You can change settings by editing this file.
# Defaults can be restored by simply deleting this file.
#
# See resolved.conf(5) for details

[Resolve]
#DNS=
#FallbackDNS=
#Domains=
#LLMNR=no
#MulticastDNS=no
#DNSSEC=no
#DNSOverTLS=no
#Cache=yes
#DNSStubListener=yes

然后运行： sudo rm /etc/resolv.conf && sudo ln -s /run/systemd/resolve/stub-resolv.conf /etc/resolv.conf

并检查您的 systemd-resolved 是否已启用：systemctl status systemd-resolved.service如果没有，则启用它：systemctl enable systemd-resolved.service并启动：systemctl start systemd-resolved.service

似乎，仅此而已。