It is now some weeks ago that I created the topic "Testing a Web-hook Dial TCP I/O Timeout" for discussion. To date, this issue has not been solved. Therefore, I have reservations about the value of this discussion group. In the future I am very likely to go elsewhere for help with Gogs problems.
Hi, for that particular problem you posted, it is due lack your basic understand how of IP and network works, help links and the root cause of the reason were both given in the replies.
This is a forum mostly for Gogs related questions, not networking or other Linux knowledge study forum.