I was doing my usual upgrade and I have noticed this in the kernel part:
(1/36): kernel-6.0.7-200.fc36.x86_64.rpm 157 kB/s | 114 kB 00:00
[MIRROR] kernel-devel-6.0.7-200.fc36.x86_64.rpm: Curl error (56): Failure when receiving data from the peer for http://mirror.dogado.de/fedora/linux/updates/36/Everything/x86_64/Packages/k/kernel-devel-6.0.7-200.fc36.x86_64.rpm [Recv failure: Connection reset by peer]
[MIRROR] kernel-core-6.0.7-200.fc36.x86_64.rpm: Curl error (56): Failure when receiving data from the peer for http://mirror.dogado.de/fedora/linux/updates/36/Everything/x86_64/Packages/k/kernel-core-6.0.7-200.fc36.x86_64.rpm [Recv failure: Connection reset by peer]
[MIRROR] kernel-devel-6.0.7-200.fc36.x86_64.rpm: Curl error (56): Failure when receiving data from the peer for https://mirror.dogado.de/fedora/linux/updates/36/Everything/x86_64/Packages/k/kernel-devel-6.0.7-200.fc36.x86_64.rpm [OpenSSL SSL_read: Connection reset by peer, errno 104]
At the end the upgrade procedure did not end with an error something but should I be worried. I heard that there is something wrong with the Open SSL is this error due to something like that ?
Dnf routinely retries downloads, even switching mirrors used when needed, so it gets the packages properly. As long as the upgrade completed properly that means that the rpm was properly downloaded and installed.
This type message is not usually a worry and following those errors you should have seen that package in the completed list for the downloads and the upgrade list at the end of the update.
From my experience, if you have a slow connection, the dnf servers kick you out. When my connection is fast, no problems. When my connection is under 1MB/s, sometimes I can’t even update. I’m disconnected all the time from the dnf servers. Especially with the largest packets, those related to the kernel.
To resolve this problem I modify this setting : max_parallel_downloads=1 in the file /etc/dnf/dnf.conf. So even if my connection is slow each file is downloaded fast enough for me to not be disconnected from the dnf servers.
In the small rural town where I live, internet slows down in evenings, when kids get out of school, and on snow days. Updates have fewer “errors” when done early in the day but very rarely fail to complete even if done in at a “slow” time with multiple “errors”.