Cloudflare has shared more details about a recent 25-minute Border Gateway Protocol (BGP) route leak affecting IPv6 traffic, which caused measurable congestion, packet loss, and approximately 12 Gbps of dropped traffic.

The BGP system helps route data across different networks called autonomous systems (AS) that send it to destination through smaller networks on the internet.

The incident was caused by an accidental policy misconfiguration on a router and affected external networks beyond Cloudflare customers.