From nobody Sun Feb 8 12:52:33 2026 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (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 181941FDD for ; Thu, 10 Jul 2025 02:46:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752115575; cv=none; b=s9/xdi6REqS1XruEgGQ2LwHznzviwYRjeftZqAFoSzKTx2rJEYk72fqiF1l71S1zSG0xcKDkwfJ6nxDO95vfxyANBpr2rPdDPV/Ix7Fmng00XcKYN1rcvfJDiZToWShwMUwyFzmaAvvyed9liGjZORVj2C6WO4/QLk2IcZBDMfw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752115575; c=relaxed/simple; bh=Dq5E6qbcnp7OKpb31WemutPpvpSMukiF8kyCjkOa3q0=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=PlxAnWJPvUovfbQADTPAL92pCdi6U1/P+ti6moHWsvV7tjbVG+OEkAdPmqKXSZW4VdWyqCKOFrrjtpD+ptTKE7TKE1m/u5uGxYw0S2srSIQUtMfRgdUfQFhpe/O4aS2B4Qaby47yUU2wsnr0pkp/f4rahx8WAGWfTKaTq0YtJPQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=gO+0bw9v; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="gO+0bw9v" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1752115572; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=iqwXOIteg9qCzt7xtB3xuBCygfMIm2/XPmfbhNkkYd8=; b=gO+0bw9vuYPE4n4bviWPSs/IZIsAuO3HAWZIJ8lC2j4qTb042wFqejog36ihMe/+OfkbyU KSlXOZX2tTSe+bZwjmZ2utP7sWc9wM34pgMRwEcuQf5Idt670pZnrKNT8izjZz+E/JNI+P pg0q/IbXlhb3KvAaHaChQu9H4axUn+A= Received: from mx-prod-mc-05.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-651-F9ekLMmrMuuv12pNqApSiw-1; Wed, 09 Jul 2025 22:46:11 -0400 X-MC-Unique: F9ekLMmrMuuv12pNqApSiw-1 X-Mimecast-MFC-AGG-ID: F9ekLMmrMuuv12pNqApSiw_1752115570 Received: from mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.111]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id E1DEC1954236; Thu, 10 Jul 2025 02:46:09 +0000 (UTC) Received: from laptop.redhat.com (unknown [10.72.116.89]) by mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id E4ECF18002B5; Thu, 10 Jul 2025 02:46:05 +0000 (UTC) From: Li Tian To: netdev@vger.kernel.org, linux-hyperv@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Haiyang Zhang , Dexuan Cui Subject: [PATCH] hv_netvsc: Set VF priv_flags to IFF_NO_ADDRCONF before open to prevent IPv6 addrconf Date: Thu, 10 Jul 2025 10:46:03 +0800 Message-ID: <20250710024603.10162-1-litian@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.111 Content-Type: text/plain; charset="utf-8" The use of the IFF_SLAVE flag was replaced by IFF_NO_ADDRCONF to prevent ipv6 addrconf. Commit 8a321cf7becc6c065ae595b837b826a2a81036b9 ("net: add IFF_NO_ADDRCONF and use it in bonding to prevent ipv6 addrconf") This new flag change was not made to hv_netvsc resulting in the VF being assinged an IPv6. Suggested-by: Cathy Avery Signed-off-by: Li Tian --- drivers/net/hyperv/netvsc_drv.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_dr= v.c index c41a025c66f0..a31521f00681 100644 --- a/drivers/net/hyperv/netvsc_drv.c +++ b/drivers/net/hyperv/netvsc_drv.c @@ -2317,8 +2317,8 @@ static int netvsc_prepare_bonding(struct net_device *= vf_netdev) if (!ndev) return NOTIFY_DONE; =20 - /* set slave flag before open to prevent IPv6 addrconf */ - vf_netdev->flags |=3D IFF_SLAVE; + /* Set no addrconf flag before open to prevent IPv6 addrconf */ + vf_netdev->priv_flags |=3D IFF_NO_ADDRCONF; return NOTIFY_DONE; } =20 --=20 2.50.0