. Accept packet loss on purpose. Spray each transfer across hundreds of random paths. If someone handed you this list of design decisions for a network connecting 131,000 GPUs, you would assume it was written by someone who had never operated a production network. A consortium of OpenAI, AMD, Broadcom, Intel, Microsoft, and NVIDIA built exactly this — and quietly inverted three decades of consensus about how high-performance data center networks should work. The protocol is called MRC, short for Multipath Reliable Connection. It was released on May 5, 2026 through the Open Compute Project . The accompanying research paper (Araujo et al., 2026) details its deployment across OpenAI’s largest NVIDIA GB200 supercomputers, including the Stargate site with Oracle Cloud Infrastructure in Abilene, Texas, and Microsoft’s Fairwater supercomputers. MRC has been used to train the latest frontier models behind ChatGPT and Codex.…