https://blog.wongcw.com/2020/05/18/%e9%96%8b%e7%99%bc%e8%80%85%e5%98%97%e8%a9%a6%e5%9c%a8surface-go-2%e4%b8%8a%e5%ae%89%e8%a3%9dopenbsd-%e6%b2%92%e6%83%b3%e5%88%b0%e9%82%84%e6%8c%ba%e9%a0%86%e5%88%a9/