开启网卡混杂模式
sudo ip link set eth0 promisc on首先需要新建一个/etc/rc.local并添加可执行权限
sudo touch /etc/rc.local
sudo chmod +x /etc/rc.local内容如下：
#!/bin/sh -e
#/etc/rc.local
#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#
# By default this script does nothing.
# Print the IP address
_IP=$(hostname -I) || true
if [ "$_IP" ]; then
printf "My IP address is %s\n" "$_IP"
fi
ip link set eth0 promisc on
ip link add link eth0 dev mynet type macvlan mode bridge
ifconfig mynet 192.168.2.149/24
route add 192.168.2.100 dev mynet
sleep 18
route add default gw 192.168.2.100 dev mynet
exit 0
添加systemd程序
sudo vim /etc/systemd/system/rc-local.service内容如下：
[Unit]
Description=/etc/rc.local Compatibility
ConditionPathExists=/etc/rc.local
After=network.target
[Service]
Type=forking
ExecStart=/etc/rc.local start
TimeoutSec=0
RemainAfterExit=yes
[Install]
WantedBy=multi-user.target启动systemd程序
sudo systemctl enable rc-local
sudo systemctl start rc-local.service
sudo systemctl status rc-local.service安装Openwrt
创建网络
docker network create -d macvlan --subnet=192.168.0.0/24 --gateway=192.168.0.1 -o parent=eth0 macnet
docker network ls拉取镜像：
arch # 查看系统内核架构，最好拉取和系统架构相符合的镜像
# 拉取镜像，可以从https://hub.docker.com/r/sulinggg/openwrt查看
docker pull registry.cn-shanghai.aliyuncs.com/suling/openwrt:rpi4启动镜像
启动命令如下
sudo docker run --restart always --name openwrt -d --network macnet --privileged registry.cn-shanghai.aliyuncs.com/suling/openwrt:rpi4 /sbin/init--restart always参数表示容器退出时始终重启，使服务尽量保持始终可用；
--name openwrt参数定义了容器的名称；
-d参数定义使容器运行在 Daemon 模式；
--network macnet参数定义将容器加入 maxnet网络；
--privileged 参数定义容器运行在特权模式下；
registry.cn-shanghai.aliyuncs.com/suling/openwrt:armv8为 Docker 镜像名，因容器托管在阿里云 Docker 镜像仓库内，所以在镜像名中含有阿里云仓库信息；
/sbin/init定义容器启动后执行的命令。
docker container ps -a修改容器相关参数
进入容器
docker exec -it openwrt bashvim /etc/config/network
config interface 'lan'
option ifname 'eth0'
option proto 'static'
option netmask '255.255.255.0'
option ip6assign '60'
option ipaddr '192.168.2.100' #修改一个静态地址，可以通过这个地址访问到树莓派
option gateway '192.168.2.1' #修改为路由器地址
option dns '192.1682.1' #修改为路由器地址/etc/init.d/network restart解决在docker中运行openwrt宿主机无法通信的问题
ip link set eth0 promisc on
ip link add link eth0 dev mynet type macvlan mode bridge
ifconfig mynet 192.168.2.149/24
route add 192.168.2.100 dev mynet
sleep 18
route add default gw 192.168.2.100 dev mynet