It's using some sort of a custom installer that also downloads Cloudflare's BoringTun (https://github.com/cloudflare/boringtun https://github.com/cloudflare/bor

It's using some sort of a custom installer that also downloads Cloudflare's BoringTun (https://github.com/cloudflare/boringtun https://github.com/cloudflare/boringtun) directly from the author's website (nyr[.]be), since Cloudflare doesn't seem to offer it as a binary release. Example: { wget -qO- https://wg.nyr[.]be/1/latest/download 2>/dev/null || curl -sL https://wg.nyr.be/1/latest/download ; } | tar xz -C /usr/local/sbin/ --wildcards 'boringtun-*/boringtun' --strip-components 1 I don't have time to go through it in more details, but I would definitely recommend an alternative way of installing it.