is wireguard available on arm64

Mon Dec 30 21:12:27 UTC 2019

I’m s newbie on BSD. Just installed freebsd on a RPI3 using the image https://download.freebsd.org/ftp/releases/arm64/aarch64/ISO-IMAGES/12.1/FreeBSD-12.1-RELEASE-arm64-aarch64-RPI3.img.xz

which gave me release: 

FreeBSD bsd1 12.1-RELEASE FreeBSD 12.1-RELEASE r354233 GENERIC  arm64

pkg install wireguard gives message:

Updating FreeBSD repository catalogue...
FreeBSD repository is up to date.
All repositories are up to date.
pkg: No packages available to install matching 'wireguard' have been found in the repositories

on the Port web site i find: wireguard-1.0.20191226 

what am i doing wrong?

Thanks
Peter