ovpn-dco : OpenVPN Data Channel Offload in the linux kernel ( https://github.com/OpenVPN/ovpn-dco )
wireguard-modules : Simple yet fast and modern VPN that utilizes state-of-the-art cryptography ( https://www.wireguard.com/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a natinst
For Paludis use this rsync : rsync://gentoo.zugaina.org/natinst-portage
If you have a problem : ycarus(-at-)zugaina.org