RTNETLINK answers: File exists

[root@localhost network]# service network restart
Restarting network (via systemctl):  Job for network.service failed. See 'systemctl status network.service' and 'journalctl -xn' for details.
                                                           [FAILED]
[root@localhost network]# systemctl status network.service
network.service - LSB: Bring up/down networking
   Loaded: loaded (/etc/rc.d/init.d/network)
   Active: failed (Result: exit-code) since Mon 2014-11-17 03:49:55 CST; 6s ago
  Process: 8435 ExecStart=/etc/rc.d/init.d/network start (code=exited, status=1/FAILURE)

Nov 17 03:49:55 localhost.localdomain network[8435]: RTNETLINK answers: File exists
Nov 17 03:49:55 localhost.localdomain network[8435]: RTNETLINK answers: File exists
Nov 17 03:49:55 localhost.localdomain network[8435]: RTNETLINK answers: File exists
Nov 17 03:49:55 localhost.localdomain network[8435]: RTNETLINK answers: File exists
Nov 17 03:49:55 localhost.localdomain network[8435]: RTNETLINK answers: File exists
Nov 17 03:49:55 localhost.localdomain network[8435]: RTNETLINK answers: File exists
Nov 17 03:49:55 localhost.localdomain network[8435]: RTNETLINK answers: File exists
Nov 17 03:49:55 localhost.localdomain systemd[1]: network.service: control process exited, code=exited status=1
Nov 17 03:49:55 localhost.localdomain systemd[1]: Failed to start LSB: Bring up/down networking.
Nov 17 03:49:55 localhost.localdomain systemd[1]: Unit network.service entered failed state.

 解决方法：

[root@localhost network]# ifdown wlp2s0
[root@localhost network]# ifdown wlp2s0

 务必确保真的ifdown了

我的无线网卡是wlp2s0