1. Open /etc/default/grub
vi /etc/default/grub
2. Add net.ifnames=0 biosdevname=0 to GRUB_CMDLINE_LINUX. So final line may look like below:
GRUB_CMDLINE_LINUX=”vconsole.keymap=us crashkernel=auto vconsole.font=latarcyrheb-sun16 rhgb quiet net.ifnames=0 biosdevname=0″
3. grub2-mkconfig -o /boot/grub2/grub.cfg
4. rename /etc/sysconfig/network-scripts/ifcfg-en**** to /etc/syconfig/network-scripts/ifcfg-eth0
5. In ifcfg-eth0 file Change NAME=en*** to NAME=eth0
6. reboot
