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List:       netfilter
Subject:    Re: Raw payload matching beyond 2040 bits
From:       Florian Westphal <fw () strlen ! de>
Date:       2022-08-19 10:37:23
Message-ID: 20220819103723.GA14293 () breakpoint ! cc
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Julien Moutinho <julm+netfilter@sourcephile.fr> wrote:

[ moving to nf-devel ]

> Hi netfilter@,
> 
> Apparently matching beyond 2040 bits (255 bytes) starts again at 0 or something like that.
> Not sure whether this is intended or not,
> but in this case a warning would be appreciated.

This is a kernel bug, the offset is truncated to u8 (modulo 256).
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