1. pingunknownhostwwwbaiducom error cause: Generally, the NIC is not started. View all NICs. View started Nics. start unstarted NICs. 1. ping unknown host www.baidu.com.
Error cause: generally the NIC is not started
View all NICs VcD4KPHA + pgltzybzcm9 "http://www.2cto.com/uploadfile/Collfiles/20140228/201402280906055.jpg" alt = "\">
View started NICs
Start and view an unstarted Nic
Pinging again is still incorrect
Restart network service
Service network restart or/etc/init. d/network restart
2. device eth0 does not seem to be present delaying initialization error cause: the device eth0 is not found (this error is usually caused by a clone virtual opportunity)
Run service network status to view the status
The configured device is eth0. the currently active device is eth1.
Run the following command:
Change eth0 to eth1
An error occurs when you restart the network service.
3. device eth1 has different mac address than expected ignoring
Error cause: mac address mismatch
Mac address of the currently running device
Mac address in the configuration file
Change the mac address in the configuration file to the running mac address to restart the network service.