wireguard-tools binary package in Ubuntu Xenial s390x

 WireGuard is a novel VPN that runs inside the Linux Kernel and uses
 state-of-the-art cryptography (the "Noise" protocol). 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. It runs over UDP.
 .
 This package contains command-line tools to interact with the
 WireGuard kernel module. Currently, it provides only a single tool:
 .
 wg: set and retrieve configuration of WireGuard interfaces

Source package