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predakanga | 4 years ago

I recently came across another useful utility for debugging unexpected packet drops - PWRU[0] (Packet, Where Are You) by Cilium.

It uses eBPF to try to trace the path of the packet through the kernel. Haven't needed to use it yet, but it could have saved me a lot of trouble in the past.

[0]: https://github.com/cilium/pwru

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sdmike1|4 years ago

gonna have to bookmark this! it would have been really handy this summer when we were testing some vendor devices that ended up sending us a bunch of Martian packets