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Date: Thu, 6 Aug 2026 12:16:02 -0700
From: Jakub Kicinski <kuba@kernel.org>
To: Mina Almasry <almasrymina@google.com>
Cc: netdev@vger.kernel.org, linux-kselftest@vger.kernel.org,
 linux-kernel@vger.kernel.org, Andrew Lunn <andrew+netdev@lunn.ch>, "David
 S. Miller" <davem@davemloft.net>, Eric Dumazet <edumazet@google.com>, Paolo
 Abeni <pabeni@redhat.com>, Shuah Khan <shuah@kernel.org>, Stanislav
 Fomichev <sdf@fomichev.me>, Bobby Eshleman <bobbyeshleman@meta.com>
Subject: Re: [PATCH net-next v2 2/2] selftests: drv-net: ncdevmem:
 gracefully retry bind()
Message-ID: <20260806121602.711dfa34@kernel.org>
In-Reply-To: <20260803181852.491437-2-almasrymina@google.com>
References: <20260803181852.491437-1-almasrymina@google.com>
	<20260803181852.491437-2-almasrymina@google.com>
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On Mon,  3 Aug 2026 18:18:26 +0000 Mina Almasry wrote:
> During tests, ethnl_rings_set randomly bounces the link causing a
> transient IPv6 Duplicate Address Detection "tentative" race, resulting
> in spurious -EADDRNOTAVAIL aborts inside the ncdevmem server.

The test env is supposed to disable DAD and addr flush on down.
If DAD is enabled multiple ksft tests would fail.