Centos: received packet with own address as source address error Solution

When I was using centos, I suddenly encountered mouse inconsistencies. After the reset was restarted, I stayed on the blue screen and felt ashamed. This situation was mostly caused by process blocking during the startup process.

 

So, CTRL + ALT + F1 to check whether there is a constant Report on the screen: received packet with own address as source address, the message, found on the Internet, there is no specific method, however, I suspected a network problem, so I unplugged the network cable and restarted it.

 

OK, centos is up. Open the network and you can see that my machine has only one Nic, but there are two network adapters, one of which is pth0. the MAC address is abnormal, many ff, obviously, this address is incorrect. I deleted this Nic.

 

Restart. After the analysis, the reason may be that the MAC address of the local machine is the same as the MAC address of the NIC of a machine in the LAN, which generally does not happen, but it is possible in the company, because we produce ipcamera, many ipcamera do not have a MAC address at the beginning, so the probability of pth0 conflict is quite high.

 

Solve the problem!