For Ubuntu:

Edit your /etc/default/grub changing the line from

GRUB_CMDLINE_LINUX=""

to

GRUB_CMDLINE_LINUX="net.ifnames=0 biosdevname=0"

and, finally:

$ sudo update-grub

and reboot your system:

$ sudo reboot

For RHEL:

Edit file /etc/udev/rules.d/70-persistent-net.rules