How to disable Predictable Network Interface Names

Open terminal and edit the /etc/default/grub file´s GRUB_CMDLINE_LINUX_DEFAULT line.

gksudo pluma /etc/default/grub
… edit the line to
GRUB_CMDLINE_LINUX_DEFAULT="net.ifnames=0"
… save, quit and update grub

sudo update-grub

Reboot and make a new network connection.