https://qooah.com/2011/05/03/%e5%82%b3%e8%81%9e-%e7%be%8e%e7%b6%b2%e7%b5%a1%e5%95%86%e5%b0%87%e5%8f%af%e8%83%bd%e7%a6%81%e6%ad%a2%e6%89%8b%e6%a9%9f%e4%bd%bf%e7%94%a8-tethering-%e5%8a%9f%e8%83%bd%e5%88%86%e4%ba%ab%e7%b6%b2/