Cannot update or install on fedora silverblue (status code: 503)

I’m not able to run update using ipv6 for a while now.

When using rpm-ostree, here is the output I get:

Checking out tree a995c37... done
Enabled rpm-md repositories: fedora-cisco-openh264 updates fedora copr:copr.fedorainfracloud.org:phracek:PyCharm google-chrome rpmfusion-nonfree-nvidia-driver rpmfusion-nonfree-steam updates-archive
Updating metadata for 'updates'... done
error: Updating rpm-md repo 'updates': cannot update repo 'updates': 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); Last error: 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 “resolved” the issue with regular fedora by adding ip_resolve=4 in dnf.conf.

However, on Silverblue, I can’t figure out how rpm-ostree is configured and how to disable ipv6.

Here is the related issue on pagure.

Is there a way to force rpm-ostree to ignore this host?

While waiting for the issue to be solved, I added non-faulty IPs found using nslookup to my /etc/hosts.

I don’t like this solution, but I need to instlal software soo…

2605:bc80:3010:600:dead:beef:cafe:fed9 mirrors.fedoraproject.org
152.19.134.142 mirrors.fedoraproject.org