서버에 Centos 6.4 를 설치를 했는데 네트워크 연결이 안된다.IP셋팅 후 [root@localhost ~]# service network stopShutting down interface eth0: Error: Device 'eth0' (/org/freedesktop/NetworkManager/Devices/0) disconnecting failed: This device is not active[FAILED]Shutting down loopback interface: Error: Device 'lo' not found.[FAILED]Bringing up loopback interface: [ OK ]Bringing up interface eth0: Error: Connection activati..