[https://ja.wikipedia.org/wiki/UDPホールパンチング](https://ja.wikipedia.org/wiki/UDPホールパンチング) - [https://bford.info/pub/net/p2pnat/](https://bford.info/pub/net/p2pnat/) - Usenix: [https://www.usenix.org/legacy/event/usenix05/tech/general/full_papers/ford/ford.pdf?ref=https://githubhelp.com](https://www.usenix.org/legacy/event/usenix05/tech/general/full_papers/ford/ford.pdf?ref=https://githubhelp.com) - いつか読みたい(kekeho)