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networking
86 postsTailvisor gives macOS/Linux VMs their own Tailscale identity
Tailvisor is an open-source VM sandbox giving macOS/Linux guests their own Tailscale identity via a gVisor-based networking layer.
XDP BFD Integrates with Stock FRR, Eliminates Flaps Under Stress
XDP-based BFD now integrates with stock FRR bfdd, cutting flaps to zero under stress and uncovering upstream FRR and kernel bugs along the way.
bfdd vs XDP-based BFD Fast Path Under CPU Stress: 44 vs 0 Flaps
Under CPU stress, FRR's bfdd flapped 44 times in 120 seconds while an XDP-based BFD fast path stayed at zero flaps, matching line-card-level reliability.
CommitBrief — AI code reviews, right in your terminal
A provider-agnostic, local-first CLI that reviews your staged changes, a historic range, or a whole GitHub pull request. Zero telemetry, no server. Free and open source.
commitbrief.comLinux Kernel Bridge STP Timer Use-After-Free Vulnerability
Linux bridge STP timers vulnerable to use-after-free via dellink teardown gap, enabling potential kernel control-flow hijack. Patched upstream.
Sip-exporter: eBPF-Based SIP/RTP Monitoring for Prometheus
Sip-exporter uses eBPF to capture SIP/RTP traffic in-kernel and export voice quality, fraud detection, and RFC 6076 metrics to Prometheus.
Clustering Two Dell Pro Max GB10 Systems for Local AI Compute
Two Dell Pro Max GB10 systems clustered via RDMA/RoCE for 256GB of local AI memory, revealing setup quirks and firmware pitfalls.
Linux Kernel UDP Corking Flaw Enables Local Privilege Escalation
Two Linux kernel CVEs (2026-53362, 2026-53366) expose a heap OOB write via UDP MSG_SPLICE_PAGES corking, enabling local privilege escalation.
PFL Reimagines OpenBSD's pf Firewall as a Linux eBPF/XDP Dataplane
pfSense's creator built PFL, porting OpenBSD's pf firewall language onto Linux XDP. Here's how stateful filtering and NAT survive the eBPF verifier's strict constraints.
Reverse-Engineering Apple's Find My Friends API on Linux
How a developer reverse-engineered Apple's undocumented Find My Friends API on Linux, covering MobileMe tokens, IDS registration, and APNs anisette headers.
Netkit: eBPF Datapath Closes the Container Networking Performance Gap
Netkit is an eBPF-based Linux datapath that eliminates redundant queue traversals, boosting container network throughput up to 37% with Cilium/Kubernetes.