1、错误信息

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● network.service - LSB: Bring up/down networking
Loaded: loaded (/etc/rc.d/init.d/network; bad; vendor preset: disabled)
Active: active (exited) since 三 2020-06-17 14:17:55 CST; 5min ago
Docs: man:systemd-sysv-generator(8)
Process: 21758 ExecStop=/etc/rc.d/init.d/network stop (code=exited, status=0/SUCCESS)
Process: 21912 ExecStart=/etc/rc.d/init.d/network start (code=exited, status=0/SUCCESS)

6月 17 14:17:54 localhost.localdomain systemd[1]: Stopped LSB: Bring up/down networking.
6月 17 14:17:54 localhost.localdomain systemd[1]: Starting LSB: Bring up/down networking…
6月 17 14:17:54 localhost.localdomain network[21912]: 正在打开环回接口： [ 确定 ]
6月 17 14:17:55 localhost.localdomain network[21912]: 正在打开接口 eth0： 连接已成功激活（D-Bus 活动路径：/org/freedesktop/NetworkManager/ActiveConnection/2）
6月 17 14:17:55 localhost.localdomain network[21912]: [ 确定 ]
6月 17 14:17:55 localhost.localdomain systemd[1]: Started LSB: Bring up/down networking.
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2、解决方法

①、停掉NetworkManager

service NetworkManager stop
chkconfig NetworkManager off
②、配置文件设置Mac地址

    1）、查看IP/Mac 

ip addr

   2）、配置文件添加/修改Mac

vi /etc/sysconfig/network-scripts/ifcfg-eth0

#添加修改Mac地址
HWADDR=00:15::01::08
3)、重启网络

systemctl restart network

#查看网络
systemctl status network
4）、运行状态