This morning, WireGuard founding developer Jason Donenfeld announced a working, in-kernel implementation of his WireGuard VPN protocol for the FreeBSD 13 kernel. This is great news for BSD folks—and users of BSD-based routing appliances and distros such as pfSense and opnSense.
Not something I personally use, but good news for those that do.
You’re behind the curve on that one. They’re not going to release it with 13.0, instead dropping it for now, to be re-added at a later date. See this thread: https://lists.zx2c4.com/pipermail/wireguard/2021-March/006504.html