自己手動配置了ifcfg-enoxxxxx檔案後，用命令systemctl restart network重啟網路後出現以下錯誤

Restarting network (via systemctl):  Job for network.service failed. See 'systemctl status network.service' and 'journalctl -xn' for details.

根據上面的提示，執行“systemctl status network.service”輸出以下的類似資訊：

[[email protected] ~]# 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三 2014-11-05 15:30:10 CST; 1min 5s ago 
11月 05 15:30:10 localhost.localdomain network[2920]: RTNETLINK answers: File exists 
11月 05 15:30:10 localhost.localdomain network[2920]: RTNETLINK answers: File exists 
11月 05 15:30:10 localhost.localdomain network[2920]: RTNETLINK answers: File exists 
11月 05 15:30:10 localhost.localdomain network[2920]: RTNETLINK answers: File exists 
11月 05 15:30:10 localhost.localdomain network[2920]: RTNETLINK answers: File exists 
11月 05 15:30:10 localhost.localdomain network[2920]: RTNETLINK answers: File exists 
11月 05 15:30:10 localhost.localdomain network[2920]: RTNETLINK answers: File exists 
11月 05 15:30:10 localhost.localdomain systemd[1]: network.service: control process exited, code=exited 
status=1 
11月 05 15:30:10 localhost.localdomain systemd[1]: Failed to start LSB: Bring up/down networking. 
11月 05 15:30:10 localhost.localdomain systemd[1]: Unit network.service entered failed state.

主要的原因是mac地址對映錯誤，需要顯式的在配置檔案中寫進去，具體操作如下 ：

1）用ifconfig或ip addr檢視mac地址；

2）將得到的mac地址寫入到配置檔案中去，即在ifcfg-enoxxxxx檔案中修改HWADDR="XX:XX:XX:XX:XX"

XX:XX:XX:XX:XX為mac地址。如果配置檔案中沒有這一項就手動增加；

3）儲存退出配置檔案，重啟網路。