May 10

Linux: Red Hat – Change Ethernet name – Remove old ethernet devices

When running a linux system in a virtual environment the ethernet card may be assigned a new MAC address  when cloning or changing VLANS.
When this happens the ether net increments by one.  Eg. eth0, eth1, eth2

If you are experiencing this you can manually change your eth name by doing the following:

1. Type: ifconfig – and note the  MAC address of your ethernet card

2. vi /etc/udev/rules.d/70-persistent-net.rules

3.  Look for the lines that start with: SUBSYSTEM==”net”   – Check to see if your MAC address matches

4. You can safely remove any line that does not have a matching MAC address.

5. After removing these you should be left with a single line that includes your MAC address.  At the end of this line change NAME=”eth?” to NAME=”eth0″

Save your file and reboot.


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Posted May 10, 2012 by Timothy Conrad in category "Linux

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If I were to describe myself with one word it would be, creative. I am interested in almost everything which keeps me rather busy. Here you will find some of my technical musings. PGP: 4CB8 91EB 0C0A A530 3BE9 6D76 B076 96F1 6135 0A1B