iovisor/bcc

Only trace ipv4 not working without kernel CONF_IPV6 set

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#5,192 opened on Jan 17, 2025

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help wanted

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Description

I have a systematic issue to use only trace IPv4 family for tcpconnect and network performance tools. A python error code notices that ipv6 structs are undefined...

So I am not able to use network tools because my kernel do not compile conf_ipv6. Is it normal? Network BCC tools hard depends on CONF_IPV6 ? It wasn't written to readme requierments so I am asking if they is a way to do it without this dependency. Perhaps I can rewrite your python codes to exclude ipv6 support.

BCC is an amazing tools suites. Good continuation.

Best regard,

Contributor guide

Research direction
Inspect the Python tool code for IPv6 dependencies (e.g., struct ipv6 t) and add conditional compilation or runtime detection to skip IPv6 when kernel lacks IPv6 support.
Tech stack
cpython
Domain
networkingobservability
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
LinuxPythonC
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60