RHEL clones the VM and changes the NIC address.

Change the NIC address after cloning the Virtual Machine (RHEL) (1) Change the hostname

# vi /etc/sysconfig/networkNETWORKING=yesHOSTNAME=your-vm-hostname-here

(2) Change the NIC address

After cloning the RHEL6 virtual machine using virt-manager or virtual-box, you must manually change the NIC address.

First, View the Virtual Machine properties in virt-manager: View-> Details

Overview | Basic Details

Name: vm-rhel64-aa

UUID:6529d110-4191-e724-9c4d-aaa5db31fefd

NIC: 22: d6: 4b | Virtual Network Interface

Source device: Virtual network; default ': NAT

Device model: virtio

MAC address:52: 54: 00: 22: d6: 4b

Write down the UUID and MAC above.

1) log on to the VM and edit the file:

# vi /etc/sysconfig/network-scripts/ifcfg-eth0

The content is as follows:

DEVICE=eth0HWADDR=52:54:00:22:D6:4BTYPE=EthernetUUID=6529d110-4191-e724-9c4d-aaa5db31fefdONBOOT=yesNM_CONTROLLED=yesBOOTPROTO=dhcp

2) delete the file: 70-persistent-net.rules

# rm /etc/udev/rules.d/70-persistent-net.rules

3) restart the system

# reboot

Now the VM should have a new hostname and MAC address.