[grumple]

It wouldn't surprise me if the BGP routes in the DCI PNI were manually configured, since this is probably one of the most direct and important connections. I would be surprised if Cloudflare didn't have firsthand knowledge of what happened with AWS during this incident.

I think the withdrawal approach by AWS would normally work, as this action should desaturate the connections. Just really unfortunate that this caused routing through a link that was at half capacity.