Ubuntu 20.04: sudo apt-get update not Working

Question

我正在尝试安装docker到我的机器，但首先只是检查任何更新sudo apt-get update，它给我错误:

sudo apt-get update
Err:1 http://security.ubuntu.com/ubuntu focal-security InRelease           
Connection failed [IP: 185.125.190.36 80]
Err:2 http://us.archive.ubuntu.com/ubuntu focal InRelease                  
Connection failed [IP: 91.189.91.38 80]
Err:3 http://us.archive.ubuntu.com/ubuntu focal-updates InRelease
Connection failed [IP: 91.189.91.38 80]
Err:4 http://us.archive.ubuntu.com/ubuntu focal-backports InRelease
Connection failed [IP: 91.189.91.39 80]
Reading package lists... Done
W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/focal/InRelease  Connection failed [IP: 91.189.91.38 80]
W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/focal-updates/InRelease  Connection failed [IP: 91.189.91.38 80]
W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/focal-backports/InRelease  Connection failed [IP: 91.189.91.39 80]
W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/focal-security/InRelease  Connection failed [IP: 185.125.190.36 80]
W: Some index files failed to download. They have been ignored, or old ones used instead.

Answer 1

我认为这与你的网络有关，因为正如你所看到的，它发送给你连接失败的错误。

检查设备网络连接

如果它有，检查你的路由器并获得请求的ip Ping(我看到它发送请求到185.125.190.36),91.189.91.38,91.189.91.39) .