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Date: Thu, 15 Jan 2026 01:52:14 +0100
From: Pablo Neira Ayuso <pablo@netfilter.org>
To: Alessandro Vesely <vesely@tana.it>
Cc: netfilter@vger.kernel.org
Subject: Re: What happens to netfilter during end-of-day?
Message-ID: <aWg6PgmGEA6fbpwG@chamomile>
References: <3460873f-7359-46df-9e26-65c4ce0e38d2@tana.it>
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In-Reply-To: <3460873f-7359-46df-9e26-65c4ce0e38d2@tana.it>

On Wed, Jan 14, 2026 at 11:14:49AM +0100, Alessandro Vesely wrote:
> Hi,
> 
> I have a netfilter daemon that makes a looping call to mnl_socket_recvfrom()
> and quickly examines packet headers. It only stops when it's rebooted.
> However, almost every day it receives an ENOBUFS error, just once, around 4
> AM, while running cron.daily.
> 
> I haven't found any useful logs from around the same time that explain
> what's happening. Does anyone have more information?

Where is your program? It sound like it is buggy?