Engineering posts about Routing
Curated summaries and key learnings for engineers working with Routing.
How Automatic Return Routing solves IP overlap
The article discusses how Automatic Return Routing (ARR) addresses the challenges of IP address overlap in enterprise networks, particularly in scenarios involving mergers, extranet connections, and...
ASPA: making Internet routing more secure
The article introduces ASPA (Autonomous System Provider Authorization), a new cryptographic standard aimed at enhancing the security of Internet routing by validating the paths that network traffic...
Route leak incident on January 22, 2026
On January 22, 2026, a misconfiguration in Cloudflare's routing policy led to a significant BGP route leak, affecting both Cloudflare customers and external networks. The incident, which lasted 25...
A closer look at a BGP anomaly in Venezuela
The article examines a recent BGP anomaly involving AS8048 (CANTV) in Venezuela, highlighting the implications of route leaks and the underlying routing policies that may have contributed to the...