Enlarge / WireGuard will be in tree for Ubuntu 20.04 LTS (pictured), as well as the upcoming 5.6 kernel. (credit: WireGuard)

We've been anticipating WireGuard's inclusion into the mainline Linux kernel for quite some time—but as of Sunday afternoon, it's official. Linus Torvalds released the Linux 5.6 kernel, which includes (among other things) an in-tree WireGuard. Phoronix has a great short list of the most interesting new features in the 5.6 kernel, as well as a longer "everything list" for those who want to make sure they don't miss anything.
If this is the first time you're hearing about WireGuard, the TLR is that it's a relatively new VPN (Virtual Private Network) application that offers a leaner codebase, easier configuration, faster connect times, and the latest and most thoroughly peer-reviewed and approved encryption algorithms. You can find a more detailed introduction in our initial August 2018 coverage.
Can I use this on Windows? Mac? BSD? Android? IOS?

Although WireGuard is now version 1.0.0 in the Linux world, its Windows package is still 0.1.0—early alpha stages. We've used the Windows package a fair amount now, and most users will find it very usable—but it is not yet guaranteed free of platform-specific "security quirks" or other minor issues not present in the more heavily tested Linux side of things.

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