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Date: Thu, 9 Apr 2026 12:11:01 +0200
From: Florian Westphal <fw@strlen.de>
To: Jakub Kicinski <kuba@kernel.org>
Cc: "netdev@vger.kernel.org" <netdev@vger.kernel.org>
Subject: Re: [TEST] nft_tproxy_udp.sh flaky after Fedora 44 upgrade
Message-ID: <add7NeuWubAQzGrg@strlen.de>
References: <20260408152432.24b8ad0d@kernel.org>
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Jakub Kicinski <kuba@kernel.org> wrote:
> When you have a sec -- we upgraded the NIPA systems to Fedora 44
> over the weekend, and nft_tproxy_udp.sh has gotten quite flaky:
> https://netdev.bots.linux.dev/contest.html?test=nft-tproxy-udp-sh
> 
> One thing that we hit immediately is this, in case tproxy test
> uses socat:
> 
> commit e65d8b6f3092398efd7c74e722cb7a516d9a0d6d
> Date:   Sat Apr 4 16:01:03 2026 -0700
> 
>     selftests: drv-net: adjust to socat changes
>     
>     socat v1.8.1.0 now defaults to shut-null, it sends an extra
>     0-length UDP packet when sender disconnects. This breaks
>     our tests which expect the exact packet sequence.
>     
>     Add shut-none which was the old default where necessary.

Thanks for the pointer, I will try to get to this later today.