Mastering pwru: A Step‑by‑Step Guide to eBPF Packet Tracing with Cilium

This article introduces pwru, Cilium's eBPF‑based packet‑tracing tool, explains kernel requirements, shows how to install the pre‑built binary, details command‑line options, and provides practical examples for filtering, output customization, and debugging dropped packets in Linux networking.

CiliumLinux networkingOperations

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Mastering pwru: A Step‑by‑Step Guide to eBPF Packet Tracing with Cilium

Tencent Cloud Developer

Jan 10, 2023 · Cloud Native

nettrace: An eBPF‑Based Tool for Network Packet Tracing, Diagnosis and Drop Monitoring in Cloud‑Native Environments

nettrace is an eBPF‑powered command‑line utility that traces a packet’s full kernel lifecycle, diagnoses network faults with a built‑in knowledge base, monitors anomalies and skb drops, supports NAT, GRE, IPVS and netfilter hooks, and replaces legacy tools like tcpdump and droptrace in cloud‑native Linux environments.

Linuxcloud-nativediagnosis

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nettrace: An eBPF‑Based Tool for Network Packet Tracing, Diagnosis and Drop Monitoring in Cloud‑Native Environments

Tencent Cloud Developer

Jan 13, 2020 · Fundamentals

Understanding ICMPv6 and the Complete Ping6 Process

The article explains ICMPv6 fundamentals, details its message format and error/informational types, then walks through a complete ping6 exchange between two cloud VMs, illustrating each OSI‑layer step—from payload creation and neighbor discovery to routing, encapsulation, reply generation, and caching.

ICMPv6IPv6Neighbor Discovery

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Understanding ICMPv6 and the Complete Ping6 Process