淘宝搜索“mprg7 树莓派”，需要给mprg7树莓派5 PCIE转7路设备（网卡为eth1）分配一个固定ip。

安装dnsmasq服务并配置

interface=eth1
bind-interfaces
dhcp-range=192.168.23.10,192.168.23.150,12h
domain-needed
bogus-priv
no-dhcp-interface=eth0
no-dhcp-interface=wlan0 

dnsmasq服务延迟启动

sudo systemctl edit dnsmasq

输入(时长酌情添加)

 [Service]
 ExecStartPre=/bin/sleep 15

保存并退出

sudo systemctl daemon-reload
sudo systemctl restart dnsmasq