一键搭建l2tp - SERP Analysis

https://teddysun.com/448.html

https://www.bilibili.com/read/cv21687005/

https://zhuanlan.zhihu.com/p/695989475

https://www.youtube.com/watch?v=ADJkheJqtyg

https://github.com/F-Feng/Memo/issues/71

https://www.gigsgigscloud.com/cn/tutorials/article/pptp/

https://blog.csdn.net/weixin_59174698/article/details/134367389

https://github.com/quericy/one-key-ikev2-vpn

https://blog.kobin.cn/blog/system/s2/263.html

https://www.bilibili.com/read/cv25225211