WireGuard kernel module.
WireGuard is an extremely simple yet fast and modern VPN that utilizes
state-of-the-art cryptography. It aims to be faster, simpler, leaner, and more
useful than IPSec, while avoiding the massive headache. It intends to be
considerably more performant than OpenVPN. WireGuard is designed as a general
purpose VPN for running on embedded interfaces and super computers alike, fit
for many different circumstances. Initially released for the Linux kernel, it
plans to be cross-platform and widely deployable. It is currently under heavy
development, but already it might be regarded as the most secure, easiest to
use, and simplest VPN solution in the industry.

1. build dependencies:
   1. kernel-headers-modules-un-def = 1:5.0.21-alt2
   2. kernel-headers-modules-un-def = 1:5.0.21-alt2
   3. rpm-build-kernel
   4. kernel-source-wireguard = 0.0.20190601