From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 8B525156CA for ; Fri, 6 Feb 2026 02:31:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770345088; cv=none; b=LiM7dqzDNFDFvQQXw1n8yTsYo5UckFfdkR0iYTp7ZbM7MxDpXibCne3yondJz8r9KOQKikSNB3WdZf9ssaxVeVn3QwYwlFW16PaM0Oz4H3Z0mJxngXJCE0Y8+beUFwIwNJtzfD5396w0tFrZ1cc1UAKy4r+NUy5awCjeDBrm9uA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770345088; c=relaxed/simple; bh=LfDC8c1TOuPis2+WjXN+wy3rzOlJG1jqTEo2izbXR6w=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=m86uoLmkwx/h+kYq+zVla/Y2x0M3UP3okiLYKt02ef9+OiAS07rR5QLot/wC3JY5nnMwO7Rbgz0jNZokuXS0P1f+zI/fcgBy9GppJgIuW0pfdIsZQf0PMHwDZFsIgRLI4YaoTEUmEZRQgEaIFqxlRivqWfCbGRzJR188F5BgygE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=sAGUFPhQ; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="sAGUFPhQ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id F418BC4CEF7; Fri, 6 Feb 2026 02:31:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1770345088; bh=LfDC8c1TOuPis2+WjXN+wy3rzOlJG1jqTEo2izbXR6w=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=sAGUFPhQUBbW6HQ0GFH0dauX0rZlsg1hpDDTRxHSdb+K7CMpp9B7dUpc6fk+DRoRL 93fuL93NT7R1883nWrohQY3jT0XLv5Jit+BWpk2RY+JYyRR3Rr1hNjC79iacn8pqkq Wf8h1Gme1EMDMdjfT9tov0FKrvPrgOPKYJLFNtzoPyqcSXq6jFg9IdRJsj/KR4tQbM Ww01q5OvZlY01B48kx+mgXZBLDzgEw2RfW3UyA7GvimXZKVNfCACE6ouThrK+pMbBS 5YEbAZg5ay2y3Sc30W8z/XGvMSqhlLA1mrs/JNMNRItrXOId3ZyXvzoN3PetdQqdy/ W05BN1QWu541A== Date: Thu, 5 Feb 2026 18:31:27 -0800 From: Jakub Kicinski To: Marc =?UTF-8?B?U3XDscOp?= Cc: willemdebruijn.kernel@gmail.com, pabeni@redhat.com, netdev@vger.kernel.org, dborkman@kernel.org, vadim.fedorenko@linux.dev Subject: Re: [PATCH net-next v3 0/4] discard ARP/NDP b/mcast/null announce (poison) Message-ID: <20260205183127.3a76aca3@kernel.org> In-Reply-To: References: Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On Wed, 4 Feb 2026 23:11:57 +0100 Marc Su=C3=B1=C3=A9 wrote: > The current ARP and NDP implementations accept announcements with > multicast (broadcast incl.) and null MAC addresses as Sender HW Address > (SHA) in ARP or src/target lladdr in NDP, and updates the cache > for that neighbour. Doesn't apply for me: $ git checkout net-next/main=20 $ git pw series apply 1050919 Failed to apply patch: Applying: arp: discard invalid sha addr (b/mcast ARP poison) Applying: selftests/net: add no ARP b/mcast,null poison test Applying: neigh: discard invalid lladdr (b/mcast poison) Applying: selftests/net: add no NDP b/mcast,null poison test error: sha1 information is lacking or useless (tools/testing/selftests/net/= Makefile). error: could not build fake ancestor hint: Use 'git am --show-current-patch=3Ddiff' to see the failed patch hint: When you have resolved this problem, run "git am --continue". hint: If you prefer to skip this patch, run "git am --skip" instead. hint: To restore the original branch and stop patching, run "git am --abort= ". hint: Disable this message with "git config set advice.mergeConflict false" Patch failed at 0004 selftests/net: add no NDP b/mcast,null poison test --=20 pw-bot: cr