Same issue here, for installing and updating software is currently impossible.

⬢ [l0drex@toolbx ~]$ sudo dnf install git-lfs
Aktualisiere und lade Paketquellen:
 Fedora 42 - x86_64 - Updates                          100% |  81.9 KiB/s |  39.1 KiB |  00m00s
>>> Status code: 503 for https://mirrors.fedoraproject.org/metalink?repo=updates-released-f42&a
…
>>> Librepo-Fehler: Cannot prepare internal mirrorlist: Status code: 503 for https://mirrors.fe
Fehler beim Prüfen, ob metalink "https://mirrors.fedoraproject.org/metalink?repo=updates-released-f42&arch=x86_64" für Repository "updates" synchronisiert ist
 Librepo-Fehler: Cannot prepare internal mirrorlist: Status code: 503 for https://mirrors.fedoraproject.org/metalink?repo=updates-released-f42&arch=x86_64 (IP: 2a05:d014:10:7803:f774:4d7c:e277:a457)

I can also confirm. It looks like it works on IPv4 but it's broken on IPv6.

% curl -s -D /dev/stdout -o /dev/null -6 'https://mirrors.fedoraproject.org/metalink?repo=updates-released-f42&arch=x86_64' | grep HTTP
HTTP/2 503 

% curl -s -D /dev/stdout -o /dev/null -4 'https://mirrors.fedoraproject.org/metalink?repo=updates-released-f42&arch=x86_64' | grep HTTP
HTTP/2 200 

I saw somebody sharing on matrix that this is already resolved for them, do you still experience the issue?

Yes, it's still happening (I end up on 2a05:d014:10:7803:f774:4d7c:e277:a457)

It is also affecting the fedora download page: https://fedoraproject.org/workstation/download

And fedora media writer is also not able to download and is stalling on connection.

I can also confirm. It looks like it works on IPv4 but it's broken on IPv6.

% curl -s -D /dev/stdout -o /dev/null -6 'https://mirrors.fedoraproject.org/metalink?repo=updates-released-f42&arch=x86_64' | grep HTTP HTTP/2 503
% curl -s -D /dev/stdout -o /dev/null -4 'https://mirrors.fedoraproject.org/metalink?repo=updates-released-f42&arch=x86_64' | grep HTTP HTTP/2 200

I can confirm that the software updates work if I disable ipv6 in my wifi setting, thanks

De-activating ipv6 in Wifi settings did not help. The message is:

Cannot download Packages/i/ibus-typing-booster-2.27.38-1.fc42.noarch.rpm: All mirrors were tried; Last error: Status code: 404 for http://fedora.tu-chemnitz.de/pub/linux/fedora/linux/updates/42/Everything/x86_64/Packages/i/ibus-typing-booster-2.27.38-1.fc42.noarch.rpm (IP: 134.109.228.1)

@karin I see the package, but different version https://fedora.tu-chemnitz.de/pub/linux/fedora/linux/updates/42/Everything/x86_64/Packages/i/ibus-typing-booster-2.27.41-1.fc42.noarch.rpm

@karin that issue is a different one and is connected to an outdated dnf data.

dnf clean all
dnf update 

should fix that issue. (or at least that is what would be done in the past.)

I'm still seeing 503s when the request goes via x-fedora-proxyserver: proxy36.fedoraproject.org.

Currently investigating the situation on proxy36. The mirrorlist service was down, but even after restarting it the people are reporting that it's still not reachable for them.

I tried to reach it directly on the machine and the service is responding fine. So I assume that the issue would be somewhere else than in mirrorlist directly.

Will continue with investigation.

I could update with this workaround:
sudo dnf --setopt=ip_resolve=4 update
Thanks!

It seems that the mirrorlist started working again, even for IPv6. @heartbyte Could you confirm that it's working for you again?

proxy36 has started working on my end via IPv6 :thumbsup:

Shout for @darknao finding the issue. There wasn't space on /, so the server was behaving strangely. He freed some space by running dnf clean cache, but we need to clean more space as that is not enough.

Cleaned up some space, but it seems that the proxy just need a bigger storage.

It seems that the mirrorlist started working again, even for IPv6. @heartbyte Could you confirm that it's working for you again?

I re-enabled ipv6 and I can confirm that running curl -s -D /dev/stdout -o /dev/null -6 'https://mirrors.fedoraproject.org/metalink?repo=updates-released-f42&arch=x86_64' | grep HTTP now returns 200 and that dnf and gui software can both get new updates now but navigating to the url https://mirrors.fedoraproject.org/metalink?repo=updates-released-f42&arch=x86_64 returns a metalink.metalink file, same as in a curl, and I had the bad idea of opening up that file in my browser and now, every time I navigate to the fedora mirror url it spams new tabs at high rate and keeps saving metalink.part files of the metalink file on my filesystem... not sure what is up with that but it's a bit worrying...

Let me close this issue as fixed. Feel free to open new one on mirrormanager with the metalink.