iovisor/bcc

Only trace ipv4 not working without kernel CONF_IPV6 set

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#5,192 创建于 2025年1月17日

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help wanted

描述

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,

贡献者指南

技术栈
pythonc
领域
backendperformanceobservability
议题类型
feature
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
3
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
half day
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
active
清晰度议题是否清楚说明期望改动、验收标准和下一步。
mostly clear
前置要求
PythonBCC basicsKernel IPv6 configuration
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
50
研究方向
The issue involves BCC network tools (e.g., tcpconnect) that fail when IPv6 kernel support is disabled. The reporter suggests modifying Python code to conditionally skip IPv6 structs. To address this, investigate the Python scripts in the tools/ directory for imports of IPv6 related BPF structures. Consider adding a compile time or runtime check for CONFIG IPV6 to conditionally exclude IPv6 code. There are no existing PRs or comments indicating work in progress.