无法更新OpenSUSE仓库

Question

我已经安装了openSUSE Tumbleweed（今天才进行升级）。我可以使用zypper dup运行发行版升级，但其他任何类似系统更新的操作都会产生以下错误

julius@linux-rirt:~> sudo zypper update
Download (curl) error for 'http://download.opensuse.org/tumbleweed/repo/non-oss/media.1/media':
Error code: Curl error 8
Error message: 

Abort, retry, ignore? [a/r/i/...? shows all options] (a): i
Do you want to disable the repository Non-OSS permanently? [yes/no] (no): no
Warning: Skipping repository 'Non-OSS' because of the above error.
Download (curl) error for 'http://download.opensuse.org/tumbleweed/repo/oss/media.1/media':
Error code: Curl error 8
Error message: 

Abort, retry, ignore? [a/r/i/...? shows all options] (a): i
Do you want to disable the repository OSS permanently? [yes/no] (no): no
Warning: Skipping repository 'OSS' because of the above error.
Some of the repositories have not been refreshed because of an error.
Loading repository data...
Reading installed packages...

Nothing to do.

同样，如果我使用YaST 和

这是zypper lr -d

的输出

julius@linux-rirt:~> zypper lr -d
Repository priorities are without effect. All enabled repositories share the same priority.

# | Alias                | Name    | Enabled | GPG Check | Refresh | Priority | Type   | URI                                                   | Service
--+----------------------+---------+---------+-----------+---------+----------+--------+-------------------------------------------------------+--------
1 | non-oss-addon_2014-0 | Non-OSS | Yes     | (r ) Yes  | Yes     |   99     | rpm-md | http://download.opensuse.org/tumbleweed/repo/non-oss/ |        
2 | openSUSE_20180606-0  | OSS     | Yes     | (r ) Yes  | Yes     |   99     | rpm-md | http://download.opensuse.org/tumbleweed/repo/oss/     |        
3 | tumbleweed           | Update  | Yes     | (r ) Yes  | Yes     |   99     | rpm-md | http://download.opensuse.org/update/tumbleweed/       |