NB571: Linux Loads 7.0 with Network Upgrades; NetGear Routes Around FCC Ban, But How?
Network Break episode 571 covers Linux kernel 7.0's networking upgrades including ACKECN congestion control, Netgear's FCC router ban exemption, AWS's new Interconnect service, and Amazon's acquisition of GlobalStar satellite company. The hosts also discuss Cloudflare's AI agent networking product, TSMC's massive financial results, and OpenAI's pause on UK data center expansion.
Summary
The episode opens with a Red Alert security segment noting 1,304 new CVEs in the week ending April 17th, with 163 rated critical and 32 scoring a perfect 10. The main Red Alert focuses on three Cisco ICE vulnerabilities (CVE-2026-2147, 180, and 186) that allow authenticated attackers to execute arbitrary commands, escalate privileges to root, and in some cases trigger denial-of-service conditions. Patches are available.
Cloudflare announced two notable updates. First, Cloudflare Mesh, a new private networking product for AI agents under their SASE/Cloudflare One umbrella. It uses rebranded Warp client and Warp connector technology to connect AI agents, users, and resources via private IP addresses, with traffic inspection via Cloudflare Gateway. Second, Cloudflare announced a partnership with Wiz (acquired by Google for $32 billion in 2025) to discover LLM endpoints and monitor AI traffic.
AWS announced general availability of its Interconnect service in two flavors: MultiCloud, which creates Layer 3 links between AWS VPCs and other cloud providers (initially Google, with Azure and OCI coming later), and Last Mile, which provisions Direct Connect links to customer premises over telco infrastructure. Last Mile is initially available in US East via Lumen, with AT&T and Megaport coming later.
Linux kernel 7.0 was officially released with significant networking improvements. The headline feature is Accurate ECN (ACKECN), now enabled by default in TCP, which signals the precise amount of congestion rather than just its presence, allowing senders to more finely tune their transmission rates. Other updates include UDP performance optimizations and a network scheduler that now runs across multiple CPU cores.
OpenAI paused its Stargate UK data center expansion, citing energy costs and regulatory concerns around copyright. The hosts are skeptical, suggesting the more likely explanation is insufficient funding, given that global AI profits reportedly don't cover the interest on a trillion-dollar loan. The planned UK locations were in Northumberland, and partner Nscale had expected to supply up to 8,000 NVIDIA GPUs in Q1 2026.
The FCC granted exemptions from its consumer router ban to Netgear (Nighthawk, Orbi, cable gateways) and AdTran. The exemption process requires disclosure of corporate structure, supply chain inventory, country of origin for all components, and a plan for onshore manufacturing expansion. The hosts express concern that the process lacks transparency about how these requirements actually improve security, and that it could be manipulated or unequally applied.
Microsoft announced public preview of its Container Network Insights agent for Azure Kubernetes Service, integrating with Cilium, Hubble, and the AKS MCP server for read-only network observability below the Kubernetes layer.
On the financial side, ASML reported Q1 2026 revenue of 8.8 billion euros (up 13%) but saw its stock dip 6% over potential US legislation restricting lower-end lithography sales to China. TSMC reported stunning Q1 2026 results: 1.13 trillion New Taiwan dollars in revenue (approximately $36 billion USD, up 35% YoY) and net income up 58% YoY, with Q2 expected to be even stronger.
Finally, Amazon announced it is acquiring satellite company GlobalStar and simultaneously inking a deal to provide satellite services to Apple devices including emergency SOS for iPhones and Apple Watches. The hosts note this represents a significant threat to traditional terrestrial telcos and positions Amazon to compete more aggressively in the LEO satellite broadband market against Starlink.
Key Insights
- The hosts argue that the FCC's Netgear/AdTran router ban exemption process lacks transparency about how its requirements actually improve supply chain security, making it unclear whether the approved devices are materially safer than before.
- Jonna Johnson contends that OpenAI's stated reasons for pausing its UK Stargate expansion — energy costs and copyright regulation — are likely face-saving excuses, with the more probable cause being insufficient capital, given that global AI profits reportedly cannot cover interest on a trillion-dollar loan.
- Drew Connery-Murray notes that AWS Interconnect's Last Mile service positions AWS as a provisioning layer on top of telco infrastructure, which he argues compresses telco margins since AWS buys capacity in bulk at rates far lower than individual enterprises.
- The hosts observe that Amazon's acquisition of GlobalStar and its deal to provide satellite services to Apple effectively puts iPhone connectivity on an Amazon network, which they frame as a direct competitive threat to terrestrial telcos.
- Drew Connery-Murray argues that Cloudflare Mesh is essentially a rebranded VPN architecture (using existing Warp client and Warp connector), with security enforcement relying on Cloudflare's SASE suite for filtering rather than purely on network location.
- Jonna Johnson raises the concern that the Linux kernel's ACKECN implementation, while more precise than traditional ECN, still carries the inherent risk that signaling congestion can itself generate additional congestion, a known feedback loop problem.
- The hosts argue that the Linux kernel 7.0 multi-core network scheduler update is more straightforwardly beneficial than ACKECN, as removing the single-core bottleneck for scheduling is a clear performance improvement without the feedback complexity of congestion signaling.
- Drew Connery-Murray argues that Amazon's strategy of acquiring GlobalStar rather than waiting for Project Kuiper to mature is smart because Starlink has a significant head start, and buying an operational satellite provider accelerates Amazon's competitive position in LEO broadband.
Topics
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