如何在受支持的 Ubuntu 版本中访问 Universe 存储库？
software-center package-management software-sources
当我运行时sudo apt-get update，它卡在Connecting to ...
sudo apt-get update
Connecting to ...
$ sudo apt-get update 0% [Connecting to archive.ubuntu.com (2001:67c:1360:8001::17)]
这就是所有的命令输出。有谁知道出了什么问题？
updates apt networking
apt ×1
networking ×1
package-management ×1
software-center ×1
software-sources ×1
updates ×1