This is the weekly Network freak roundup for 2026-W41. It collects the latest practical networking articles published this week, so the X feed can stay quiet while readers still get all links in one place.
This week's articles
- Palo Alto Traffic Log Aged Out: Troubleshooting Matrix and Packet Capture Checklist
- GRE Tunnel Basics Explained: Source, Destination and Tunnel Interface
- Stateful vs Stateless Firewall Explained: Packet Flow and Interview Answer
- InfiniBand P_Key Troubleshooting: 256-GPU Partition Design and Test Matrix
- F5 Pool Member Up but Application Down: Readiness Monitor Troubleshooting Checklist
- Zone-Based Firewall Explained: Class-Map, Policy-Map and Service-Policy
- GPUDirect RDMA Slow or Not Working? GPU-to-NIC Troubleshooting Matrix
- ACL Basics Explained: Standard vs Extended, Implicit Deny and Examples
- Palo Alto PBF Failover Not Working: Dual-ISP Troubleshooting Checklist
- DHCP Snooping vs DAI vs IP Source Guard: Differences and Interview Answer
- Prisma SD-WAN Traffic Using the Wrong Link: Path Policy Troubleshooting Matrix
- uRPF Strict vs Loose Mode Explained: Asymmetric Routing and Interview Answer
For topic hubs, see Start Here, Data Center Networking, AI Infrastructure & Automation and BGP Table Watch.
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