Instructions to rearrange network devices1) You will need the mapping of your physical network devices to your MAC address according tothe work done during the first lab. As an example:NIC Desired Device NameMAC AddressEmbedded (eth7) eth0 00:E0:81:55:7D:59Top (eth4) eth1 00:00:B4:91:D6:47Middle (eth5) eth2 00:00:B4:91:D7:5BBottom (eth6) eth3 00:00:B4:C3:00:9A2) login as root3) run the following command to make a backup of your network device configuration:cp /etc/udev/rules.d/70-persistent-net.rules /home/student/70-persistent-net.backup4) open with your preferred text editor the /etc/udev/rules.d/70-persistent-net.rules file. This file maps the device names to the hardware address. All we need to do in the case of the example above is to replace eth7 by eth0, eth4 by eth1, eth5 by eth2 and eth6 by eth3. Be very careful when editing this file. Make sure that your MAC address matches the previous table. The following screen captures demonstrate the file before and after the changes:Before:After5) backup the /etc/sysconfig/network-scripts/ifcfg-eth0 file and remove it:cp /etc/sysconfig/network-scripts/ifcfg-eth0 /home/studentrm /etc/sysconfig/network-scripts/ifcfg-eth0 6) Save your changes and reboot your computer. When you login again, if you run the ifconfigcommand, you should have your devices
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