Linux - NetworkingThis forum is for any issue related to networks or networking.
Routing, network cards, OSI, etc. Anything is fair game.
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Which version on CentOS you are running on. Also, do you have NetworkManager running. Files under /etc/sysconfig/network-scripts/<files> are usually used for manual / expert configuration. NetworkManager is legacy. If you don't have a file you can create one. Or, I would suggest just launch NetworkManager and see if you are able to see settings for eth4 and what is the name NetworkManager showing there? Just toggle something in network manager and save. See if it creates the file.
Incase it does not create the file yes create the file manually.
Quite interesting and it appears to be that Auto Eth is the one pointing to eth4 it is just that the name is not correct it is not able to reflect the status / state.
Alright, as you said eth4 is a wired connection and assuming that you are logged in GUI you will see network icon for your ethernet somewhere in the system tray. Right click on it and click on edit connection and see where does it take you to.
Quite interesting and it appears to be that Auto Eth is the one pointing to eth4 it is just that the name is not correct it is not able to reflect the status / state.
Alright, as you said eth4 is a wired connection and assuming that you are logged in GUI you will see network icon for your ethernet somewhere in the system tray. Right click on it and click on edit connection and see where does it take you to.
If I do it takes me to the screen where I can see System Eth0 and Auto Eth. Where i can set the interface to static or dhcp.
On that screen itself, if you will select eth0 and click on edit / configure it will allow you to edit that. Same goes for Auto eth which I still suspect is pointing to eth4.
On that screen itself, if you will select eth0 and click on edit / configure it will allow you to edit that. Same goes for Auto eth which I still suspect is pointing to eth4.
I agree with you Auto Eth could be pointing to Eth4 but what is interesting is that it shows "Last Used" "never".
Eth4 is currently used and is holding a DHCP IP and able to ping or browse on that subnet.
Did you try changing Auto Eth to eth4 and see if it still shows as not in use? Did you try toggling the settings in NetworkManager? Did you see any file getting created?
What is the output of route -n, interested in the device name it shows in the output.
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