TCP

RFC 1122, the document that defines the TCP/IP requirements every host on the Internet must meet, was published in October 1989. Networking enthusiasts are revisiting its history, noting how the standard laid the groundwork for protocols used in Linux and open-source networking stacks that still run the modern Internet.

A new engineering write-up proposes routing large language model traffic across multiple inference providers using congestion-control ideas borrowed from TCP. The approach dynamically shifts requests toward providers that respond faster or fail less, similar to how TCP manages network congestion. Readers on Hacker News are discussing the technical trade-offs of applying networking concepts to AI inference routing.

A new write-up explores running PostgreSQL over the QUIC protocol instead of the usual TCP connection. QUIC, developed originally at Google and standardized by the IETF, promises faster connection setup, built-in encryption and better performance on unreliable networks. The project is drawing attention from database and infrastructure developers curious whether these transport-layer gains translate into real-world improvements for database traffic.

A new vulnerability, CVE-2026-42542 with a CVSS score of 7.5, has been disclosed in TDengine, an open-source time-series database used in OT and IoT deployments. The flaw is an integer underflow in pre-authentication RPC message parsing: a single crafted packet sent to TCP port 6030 can crash unauthenticated servers. Versions 3.4.0.0 through 3.4.1.5 are affected, with a fix released in version 3.4.1.6. No exploitation in the wild has been reported so far, and a proof-of-concept has been withheld.