Forwarding here the info that was sent to Fedora infra list ( https://pagure.io /fedora-infrastructure/issue/11365 )
In summary, today you'll probably see some services being unreachable, and impacted services are the ones located in the Fedora DC (it doesn't impact https://cbs.centos.org and others).
Impacted services: - https://accounts.centos.org (and https://fasjson.fedoraproject.org that some infra services are using to retrieve users info and groups) - ns2.centos.org
Worth knowing that, due to network upgrade, we'll also have to power off in advance some Virtual Machines that are located on a remote iscsi block device. And at the same time we'll also convert some VMs/KVM hosts from centos 7 to el9
Kind Regards,