zypper 总是 curl error 16

如题,zypper 安装、更新、刷新等等时,总是出错,提示 curl error 16。不确定是网络的问题,咋解决?

16 HTTP/2 error. A problem was detected in the HTTP2 framing layer. This is somewhat generic and can be one out of several problems, see the error message for details.

所以你得到的错误信息呢?

昨天升级输了一个小时的 r 来重试更新

一般没有其他的错误信息,除了 curl error 16。
典型的:

下载 (curl) 'https://download.opensuse.org/repositories/openSUSE:/Tumbleweed/standard/repodata/repomd.xml' 出错:
错误代码:Curl error 16
错误消息:

再有就是:

软件源 'Wine' 无效。
[openSUSE_Tumbleweed_3|https://download.opensuse.org/repositories/Emulators:/Wine/openSUSE_Tumbleweed/] 在指定 URL 未找到有效元数据
历史:
 - 下载 (curl) 'https://download.opensuse.org/repositories/Emulators:/Wine/openSUSE_Tumbleweed/repodata/182d1495fd7d2e04216a4f6239211ee6d756f017d723458f446b23b7fffc0bc0-primary.xml.gz' 出错:
错误代码:Curl error 16
错误消息:

 - Can't provide ./repodata/182d1495fd7d2e04216a4f6239211ee6d756f017d723458f446b23b7fffc0bc0-primary.xml.gz

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