How Verizon and a BGP Optimizer Knocked Large Parts of the Internet Offline Today

This post details a significant BGP route leak incident that caused widespread internet outages, impacting Cloudflare's services. It explains the technical cause involving a BGP optimizer and Verizon's insufficient filtering, highlighting the vulnerabilities in current BGP practices. The post strongly advocates for the adoption of routing security measures like RPKI, prefix limits, and IRR filtering, emphasizing Cloudflare's own implementation and urging other network operators, particularly Verizon, to adopt them to prevent future incidents.