Packet, where are you?
eBPF-based Linux kernel networking debugger for tracing and filtering network packets with fine-grained introspection.
What is Packet, where are you??
pwru (packet, where are you?) is an eBPF-based tool for tracing network packets in the Linux kernel with advanced filtering capabilities. It provides fine-grained introspection of kernel state to facilitate debugging complex network connectivity issues, such as identifying where packets are dropped or transformed.
Linux kernel developers, network engineers, and SREs/DevOps engineers who need to diagnose low-level networking issues in the kernel that traditional tools cannot easily reveal.
Developers choose pwru for its ability to trace packets with precision across kernel transformations (like NAT or tunnel decapsulation) and after they are freed, using advanced pcap-style filtering and multiple output formats. Its eBPF foundation and support for multiple tracing backends (kprobe, kprobe-multi) offer deep visibility into kernel networking internals.
Overview
Packet, where are you? -- eBPF-based Linux kernel networking debugger
Use Cases
Best For
- Debugging complex network packet drops in the Linux kernel where traditional tools fail.
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