root@hi3798mv300:~# vi /etc/network/interfaces.d/eth0
输入以下：
allow-hotplug eth0
auto eth0
iface eth0 inet static
address 192.168.1.250
network 192.168.1.0
netmask 255.255.255.0
broadcast 192.168.1.255
gateway 192.168.1.1
dns-nameservers 211.138.106.2
dns-nameservers 211.138.106.7
dns-nameservers 8.8.8.8
pre-up ifconfig eth0 hw ether 00:11:22:33:44:88
注意mac地址不能是1开头，1是多播地址，修改后进不去。
