Time to use a VPN in your docker pipelines ;) Or run your systems outside of Spain.
Or can this be avoided by using an alternate DNS?
Alternate DNS doesn't help, they block at IP level.
Yes, they block IPs belonging to CDNs (CF including R2, BunnyCDN, CDN77, Fastly, Alibaba, Akamai even)...
It is not a DNS based block, but on the IP level. Once I knew what caused the issue, I figured I use one of my Hetzner vServers as an exit node in tailscale.
But come on, this can't be true. I wonder how many other people in IT wasted hours on issues and tickets to find out it is due to a football match taking place. Admittedly, chances are low, as football matches are usually outside of office hours.
They are planning to also block VPN providers during football matches, see https://www.techradar.com/vpn/vpn-privacy-security/la-liga-w...