# echo "deb http://deb.debian.org/debian/ unstable main" > /etc/apt/sources.list.d/unstable.list
# echo -e "Package: *\nPin: release a=unstable\nPin-Priority: 150\n" > /etc/apt/preferences.d/limit-unstable
# apt-get update && apt-get install wireguard-dkms wireguard-tools
# modprobe wireguard && lsmod | grep wireguard

Host A

# wg genkey > privateA
# wg pubkey < privateA > publicA

Host B

# wg genkey > privateB
# wg pubkey < privateB > publicB