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Date: Tue, 21 Oct 2025 12:45:49 +0200
From: Florian Westphal <fw@strlen.de>
To: Antonio Ojea <aojea@google.com>
Cc: Pablo Neira Ayuso <pablo@netfilter.org>,
	Eric Dumazet <edumazet@google.com>, netfilter-devel@vger.kernel.org
Subject: Re: [PATCH] selftests: nft_queue: conntrack expiration requeue
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Antonio Ojea <aojea@google.com> wrote:
> ct mark 0x66000000 ct state established,related accept
> queue flags bypass to 98
> 
> So I just need to set the mark/label on the verdict and clear the mark
> or the label via netlink and it gets requeued.
> 
> I can make it work with connmark very easily but labels seem a better
> fit because they allow me to set different values and avoid
> compatibility issues.
> However, I'm not able to make this work with labels, I do not know if
> it is a problem on my side, I'm not able to use the userspace
> conntrack tool too.
> I think I'm setting the label correctly but the output of conntrack -L
> or conntrack -L -o labels do not show anything.
> If I try to set the label manually it also fails with ENOSPC
> 
> conntrack -U -d 10.244.2.2 --label-add net
> conntrack v1.4.8 (conntrack-tools): Operation failed: No space left on device

No space for the label extension.

Does it start to work for new flows when you add a rule like
'ct label foo'?