From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2C58F37A829; Sat, 8 Aug 2026 16:23:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786206229; cv=none; b=s6zSyCrGFdqz9pXfT4EPQeqv4ruOdaV5oVyEWBwNC3KWK5+pC4i5KjzYtYZMj60/j7wgaL5u58cgSvjbejljJLegH3jZsn+LiQ4NvGUKCEObTSbM2J/QLUyjgjQ//TV2wggMs4fsWWBXCkLicTHxRvrye7l8glmCGJoY9AwxcR0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786206229; c=relaxed/simple; bh=QExZBJZ7lB9BEWrq9f/sOOGyqDVveyaYug5QCBhQeoY=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=brPk5IGC7DUH44EnGXPVL3b/ss/4a2zdIryIL62Gbg8v4axCPyToIXJjDpzLIaGdXERTV6ICMo1dy+aYW7DD1nF8tOFPI9KQAWKixJKKTJVcnMOxajF3y1VL0fR/cCNaRg251Uuns4AT+ojhCgReFOdijqInQxYivdjLg2YkfZo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ah9gc5tN; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ah9gc5tN" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 98CF61F000E9; Sat, 8 Aug 2026 16:23:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1786206228; bh=PxpQt/6lvtnajjgFX3wfQsLxwio/KrTkZDU3gWLbEO0=; h=From:To:Cc:Subject:Date; b=ah9gc5tNQYUzDKt/E/gOa6xiD9oLTjDaVXlsGOhamhHQYk4j+3R+Zbgo1mb6OkEL9 8kV5N75W6hVTEba/1rfSKXGtZXj9nzHVI5xkezo7uV4Uv9O9EQu9HzOS+j7lOkNxAs Y13hfXIphH3BPGiK+cOcp5NDPQorV9hRkjQV0CE/f9F9VgFNJwXyVKSF3npo8dX2UR loBTnaCkgmIBilEufzOMftuB+1foG6mLThwCsTdCcoo5WjUEWTfaRswCShUdUqxHnK A2wLZcFpJYGmulKB2y8VIyb0tlX+1CZO3CuXtysGrZLPlRt2euVE7jQNveZAh/hyWl +JSD43LQdkaLQ== From: Jakub Kicinski To: davem@davemloft.net Cc: netdev@vger.kernel.org, edumazet@google.com, pabeni@redhat.com, andrew+netdev@lunn.ch, horms@kernel.org, Jakub Kicinski , liuhangbin@gmail.com, jv@jvosburgh.net, shuah@kernel.org, linux-kselftest@vger.kernel.org Subject: [PATCH net-next] selftests: bonding: disable DAD for IPv6 addresses Date: Sat, 8 Aug 2026 09:23:45 -0700 Message-ID: <20260808162345.2442594-1-kuba@kernel.org> X-Mailer: git-send-email 2.55.0 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit bond_reset() waits up to 2 seconds for IPv6 connectivity. With default settings DAD itself may take almost 2 seconds, causing flakes on debug builds. It used to flake once or twice a week, recently it started failing once a day. Probably some downstream changes to scheduler, or our machines go busier. A lot of selftests already use nodad, let's use nodad in bonding, too. I don't see an obvious reason why DAD would be important to the test. Signed-off-by: Jakub Kicinski --- CC: liuhangbin@gmail.com CC: jv@jvosburgh.net CC: shuah@kernel.org CC: linux-kselftest@vger.kernel.org --- .../selftests/drivers/net/bonding/bond_topo_2d1c.sh | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/tools/testing/selftests/drivers/net/bonding/bond_topo_2d1c.sh b/tools/testing/selftests/drivers/net/bonding/bond_topo_2d1c.sh index 167aa4a4a12a..903c7a6c7287 100644 --- a/tools/testing/selftests/drivers/net/bonding/bond_topo_2d1c.sh +++ b/tools/testing/selftests/drivers/net/bonding/bond_topo_2d1c.sh @@ -48,7 +48,7 @@ gateway_create() ip -n ${g_ns} link add br0 type bridge ip -n ${g_ns} link set br0 up ip -n ${g_ns} addr add ${g_ip4}/24 dev br0 - ip -n ${g_ns} addr add ${g_ip6}/24 dev br0 + ip -n ${g_ns} addr add ${g_ip6}/24 dev br0 nodad } gateway_destroy() @@ -75,7 +75,7 @@ server_create() ip -n ${s_ns} link set bond0 up ip -n ${s_ns} addr add ${s_ip4}/24 dev bond0 - ip -n ${s_ns} addr add ${s_ip6}/24 dev bond0 + ip -n ${s_ns} addr add ${s_ip6}/24 dev bond0 nodad } # Reset bond with new mode and options @@ -97,9 +97,7 @@ bond_reset() ip -n ${s_ns} link set bond0 up ip -n ${s_ns} addr add ${s_ip4}/24 dev bond0 - ip -n ${s_ns} addr add ${s_ip6}/24 dev bond0 - # Wait for IPv6 address ready as it needs DAD - slowwait 2 ip netns exec ${s_ns} ping6 ${c_ip6} -c 1 -W 0.1 &> /dev/null + ip -n ${s_ns} addr add ${s_ip6}/24 dev bond0 nodad } server_destroy() @@ -124,7 +122,7 @@ client_create() ip -n ${c_ns} link set eth0 up ip -n ${c_ns} addr add ${c_ip4}/24 dev eth0 - ip -n ${c_ns} addr add ${c_ip6}/24 dev eth0 + ip -n ${c_ns} addr add ${c_ip6}/24 dev eth0 nodad } client_destroy() -- 2.55.0