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+# ClearDNS
+
+> 容器化的无污染DNS服务
+
+## 使用示例
+
+启动容器之前需要为Docker创建一个macvlan网络
+
+```
+# 开启网卡混杂模式
+shell> ip link set eth0 promisc on
+
+# 创建macvlan网络
+shell> docker network create -d macvlan \
+--subnet=192.168.2.0/24 \
+--gateway=192.168.2.1 \
+-o parent=eth0 macvlan
+```
+
+宿主机网络需要重新配置
+
+```
+# Debian系示例
+shell> vim /etc/network/interfaces
+
+# 添加以下内容
+auto eth0
+iface eth0 inet manual
+
+auto macvlan
+iface macvlan inet static
+  address 192.168.2.34
+  netmask 255.255.255.0
+  gateway 192.168.2.2
+  dns-nameservers 192.168.2.1
+  pre-up ip link add macvlan link eth0 type macvlan mode bridge
+  post-down ip link del macvlan link eth0 type macvlan mode bridge
+
+# 重启宿主机
+```
+
+运行容器
+
+```
+shell> docker run --name cleardns \
+--network macvlan \
+--privileged -d \
+-v /etc/cleardns/:/etc/cleardns/ \
+-v /etc/cleardns/SmartDNS/:/etc/smartdns/expose/ \
+-v /etc/cleardns/AdGuardHome/:/opt/AdGuardHome/ \
+-v /etc/timezone:/etc/timezone:ro \
+-v /etc/localtime:/etc/localtime:ro \
+dnomd343/cleardns
+```
+
+编辑macvlan网路的IP地址
+
+```
+# 编辑自定义初始化脚本
+shell> vim /etc/cleardns/custom.sh
+
+# 写入以下内容，修改容器的IP与网关
+ip addr flush dev eth0
+ip addr add 192.168.2.3/24 brd 192.168.2.255 dev eth0
+ip route add default via 192.168.2.2
+
+# 重启容器生效
+shell> docker restart cleardns
+```
+
+设置国外DNS服务
+
+```
+shell> vim /etc/cleardns/SmartDNS/foreign.conf
+# 默认为8.8.8.8，该地址与协议无抗污染功能，移除该行
+# 建议使用DoH或DoT地址，切勿使用UDP53方式
+# 修改完毕后重启容器生效
+```
+
+浏览器打开 `容器IP:3000`，进入AdGuardHome配置界面，设置账号后修改上游DNS为 `127.0.0.1:5353`，同时建议启用DNSSEC
+
+配置DHCP服务器，设置DNS地址为容器IP，即可使用无污染DNS服务