You can reproduce by doing: $ curl -H "User-Agent: dnf/2.7.5" http://linuxdownload.adobe.com/linux/x86_64/repodata/repomd.xml curl: (56) Recv failure: Connection reset by peer If you change the User-Agent, however, it works: curl -H "User-Agent: yum/2.7.5" http://linuxdownload.adobe.com/linux/x86_64/repodata/repomd.xml It seems like dnf is filtered out.
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