https://zap51.in/blog/ Writing about systems, security, software, machines, and infrastructure. en Sun, 23 Aug 2026 00:00:00 +0530 https://zap51.in/blog/mattermost-team-edition-builds/ https://zap51.in/blog/mattermost-team-edition-builds/ Sat, 22 Aug 2026 00:00:00 +0530 Open source Self-hosting The v11 free offering changed, but the operational need did not. Here is why I maintain latest ESR builds for the community and for my own server. https://zap51.in/blog/2026-continental-gt-650-india/ https://zap51.in/blog/2026-continental-gt-650-india/ Sat, 22 Aug 2026 00:00:00 +0530 Motorcycles India A close look at the new equipment, India pricing, and the mechanical package Royal Enfield wisely left alone. https://zap51.in/blog/cve-2026-53359-januscape-kvm/ https://zap51.in/blog/cve-2026-53359-januscape-kvm/ Sat, 22 Aug 2026 00:00:00 +0530 Security Linux KVM How nested virtualization reaches a KVM x86 shadow MMU use after free, why Intel and AMD hosts are exposed, and what operators should patch or disable. https://zap51.in/blog/one-inference-pool-three-accelerator-vendors/ https://zap51.in/blog/one-inference-pool-three-accelerator-vendors/ Sat, 22 Aug 2026 00:00:00 +0530 AI infrastructure llm-d Field notes from building and benchmarking one sovereign inference service across NVIDIA H100 NVL, AMD MI325X, and Intel Gaudi 3 hardware. https://zap51.in/blog/caddy-2-11-https-upstream-host-header/ https://zap51.in/blog/caddy-2-11-https-upstream-host-header/ Sat, 22 Aug 2026 00:00:00 +0530 Operations Caddy Why the safer reverse proxy default can break redirects, virtual hosts, and WebSockets, plus the compatibility fix and deployment checks. https://zap51.in/blog/cve-2026-42533-cve-2026-56434-cve-2026-60005/ https://zap51.in/blog/cve-2026-42533-cve-2026-56434-cve-2026-60005/ Sat, 22 Aug 2026 00:00:00 +0530 Security nginx Three nginx memory safety flaws across map processing, SSI proxying, and HTTP slicing, including exposure conditions and corrected patch guidance.