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Date: Wed, 21 Jan 2026 00:20:11 +0100
From: Florian Westphal <fw@strlen.de>
To: Aleksei Oladko <aleksey.oladko@virtuozzo.com>
Cc: Pablo Neira Ayuso <pablo@netfilter.org>, Phil Sutter <phil@nwl.cc>,
	"David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
	Simon Horman <horms@kernel.org>, Shuah Khan <shuah@kernel.org>,
	Konstantin Khorenko <khorenko@virtuozzo.com>,
	netfilter-devel@vger.kernel.org, coreteam@netfilter.org,
	netdev@vger.kernel.org, linux-kselftest@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] selftests: netfilter: avoid RULE_REPLACE error when
 zeroing rule counters
Message-ID: <aXANq__7K0_fhq2D@strlen.de>
References: <20260120231106.328585-1-aleksey.oladko@virtuozzo.com>
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In-Reply-To: <20260120231106.328585-1-aleksey.oladko@virtuozzo.com>

Aleksei Oladko <aleksey.oladko@virtuozzo.com> wrote:
> diff --git a/tools/testing/selftests/net/netfilter/rpath.sh b/tools/testing/selftests/net/netfilter/rpath.sh
> index 24ad41d526d9..90cc21233235 100755
> --- a/tools/testing/selftests/net/netfilter/rpath.sh
> +++ b/tools/testing/selftests/net/netfilter/rpath.sh
> @@ -125,8 +125,24 @@ netns_ping() { # (netns, args...)
>  }
>  
>  clear_counters() {
> -	[ -n "$iptables" ] && ip netns exec "$ns2" "$iptables" -t raw -Z
> -	[ -n "$ip6tables" ] && ip netns exec "$ns2" "$ip6tables" -t raw -Z
> +	if [ -n "$iptables" ]; then
> +		if ! ip netns exec "$ns2" "$iptables" -t raw -Z 2>/dev/null; then
> +			ip netns exec "$ns2" "$iptables" -L PREROUTING -t raw -n --line-numbers | \

I would prefer to SKIP in this case rather than working around
userspace bugs.