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How to solve the no device found for connection 'System eth0' problem, many novices are not very clear about this, in order to help you solve this problem, the following editor will explain for you in detail, people with this need can come to learn, I hope you can gain something.

With ifconfig eth0 up, prompt for the error message:

Eth0: unknown interface: No such device

Solution:

1. Enter the / etc/sysconfig/network-scripts/ directory, check the ifcfg-eth0 configuration information, and find that it is correct.

2. Check / etc/udev/rules.d/70-persistent-net.rules and compare its MAC information with ifcfg-eth0. There is nothing wrong with it.

3. Using ifconfig-a, we find that there is no information about eth0, but there is information about eth2, so it is possible that the system does not recognize eth0.

4. Enter the / etc/sysconfig/network-scripts/ directory and execute the following command:

Cp ifcfg-eth0 ifcfg-eth0.bak

Mv ifcfg-eth0 ifcfg-eth2

5. Then, by looking at the MAC information of eth2 in / etc/udev/rules.d/70-persistent-net.rules, it is consistent with the MAC information in ifcfg-eth2.

6. Finally, restart the network: service network restart, the problem is solved.

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