ssh: connect to host github.com port 22: Connection refused fatal: Could not read from remote repository.

背景

这次来回切换节点，换直连，等等任何方式都没有起作用，于是又上网搜。

原因

> nslookup github.com
服务器:  UnKnown
Address:  fe80::ced8:43ff:fe7f:1790

非权威应答:
名称:    github.com
Address:  127.0.0.1

github.com域名被dns污染了，解析到了127.0.0.1这个本地地址，没有响应是理所应当的。

12月4日更新

git push
ssh: Could not resolve hostname gitee.com: Name or service not known
fatal: Could not read from remote repository.

今天gitee出问题了，但是似乎是公司路由器那边的故障，其他域名都正常，gitee无法正常解析。
依旧是可以通过更改dns来解决问题。

PS C:\Users\32956> nslookup.exe gitee.com
DNS request timed out.
    timeout was 2 seconds.
服务器:  UnKnown
Address:  192.168.20.1

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
*** 请求 UnKnown 超时

解决

网络上提供的解决方法基本上是改hosts，但是我不太喜欢改这玩意。

DoH

阿里的DNS。

223.6.6.6
https://223.6.6.6/dns-query

参考文章

1. 解决个困扰很久的问题：ssh: connect to host github.com port 22: Connection refused https://zhuanlan.zhihu.com/p/643193388