本来机器好好的，突然发现虚拟机上不了网，ifconfig一看，ip没有了，遂重启网卡
[root@cld network-scripts]# systemctl restart network
Job for network.service failed because the control process exited with error code. See "systemctl status network.service" and "journalctl -xe" for details.
[root@cld network-scripts]# systemctl status network.service
● network.service - LSB: Bring up/down networking
Loaded: loaded (/etc/rc.d/init.d/network; bad; vendor preset: disabled)
Active: failed (Result: exit-code) since Thu 2018-06-21 04:50:03 EDT; 23s ago
Docs: man:systemd-sysv-generator(8)
Process: 4498 ExecStop=/etc/rc.d/init.d/network stop (code=exited, status=0/SUCCESS)
Process: 4834 ExecStart=/etc/rc.d/init.d/network start (code=exited, status=1/FAILURE)
Tasks: 0
Jun 21 04:49:58 cld systemd[1]: Starting LSB: Bring up/down networking...
Jun 21 04:49:58 cld network[4834]: Bringing up loopback interface: [ OK ]
Jun 21 04:49:58 cld network[4834]: Bringing up interface eth0: [ OK ]
Jun 21 04:50:03 cld network[4834]: Bringing up interface eth1: [ OK ]
Jun 21 04:50:03 cld network[4834]: Bringing up interface br0: ERROR : [/etc/sysconfig/network-scripts/ifup-eth] Error, some other host (9E:89:7D:9E:11:82) already uses address 192.168.0.201.
Jun 21 04:50:03 cld network[4834]: [FAILED]
Jun 21 04:50:03 cld systemd[1]: network.service: control process exited, code=exited status=1
Jun 21 04:50:03 cld systemd[1]: Failed to start LSB: Bring up/down networking.
Jun 21 04:50:03 cld systemd[1]: Unit network.service entered failed state.
Jun 21 04:50:03 cld systemd[1]: network.service failed.
[root@cld network-scripts]#
百度，网卡配错了，NetworkManager要关，等等各种都试了，然而还是不行
只能查看系统报错了
遂 grep network /var/log/message
原来ip重了，然后把static ip换了一下，重启，网络正常
当然，换成dhcp也可以
不能迷信百度了，还是自个儿查吧