Enable Ethernet On Ubuntu for ASUS Z270 Motherboard

Z270 uses Intel I219 chip for LAN.

Download I218 (same as I219) e1000e driver:

https://downloadcenter.intel.com/product/71307/Intel-Ethernet-Connection-I218-LM

Copy the driver to the Ubuntu machine with a flash drive.

Extract the tar.gz as e100e-<x.x.x>

cd e1000e-<x.x.x>/src/

sudo make install

the binary will be installed as: /lib/modules/<KERNEL VERSION>/kernel/drivers/net/e1000e/e1000e.[k]o

sudo modprobe e1000e insmod e1000e