複数インターフェースを持つ場合
https://qiita.com/BlueBlue/items/cf49e33cdc36a55b4082
https://tech.andhandworks.com/2018/09/raspberry-pi.html
https://zenn.dev/yutafujii/books/fcb457e798a3d5/viewer/bce757
https://y-naito.ddo.jp/index.php?id=1472284381
https://www.appliot.co.jp/blog/raspberry-pi%E3%82%92%E3%83%AB%E3%83%BC%E3%82%BF%E3%83%BC%E5%8C%96%E3%81%97%E3%81%A6%E3%81%BF%E3%81%9F/
https://www.chobits.com/raspberry-pi-wifi-router/
https://tech-mmmm.blogspot.com/2018/03/raspbiandebianlinux.html
https://qiita.com/kooohei/items/b0931ae210911cc52adc