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[204.195.96.226]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-704979e3146sm15991256d6.41.2025.07.10.21.07.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 10 Jul 2025 21:07:32 -0700 (PDT) Date: Thu, 10 Jul 2025 21:07:29 -0700 From: Stephen Hemminger To: Li Tian Cc: netdev@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org, Haiyang Zhang , Dexuan Cui Subject: Re: [PATCH v2] hv_netvsc: Add IFF_NO_ADDRCONF to VF priv_flags before Message-ID: <20250710210729.36231c98@hermes.local> In-Reply-To: <20250711034021.11668-1-litian@redhat.com> References: <20250710024603.10162-1-litian@redhat.com> <20250711034021.11668-1-litian@redhat.com> Precedence: bulk X-Mailing-List: linux-hyperv@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Fri, 11 Jul 2025 11:39:58 +0800 Li Tian wrote: > Add an additional flag 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 | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) > > diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c > index c41a025c66f0..8be9bce66a4e 100644 > --- a/drivers/net/hyperv/netvsc_drv.c > +++ b/drivers/net/hyperv/netvsc_drv.c > @@ -2317,8 +2317,11 @@ static int netvsc_prepare_bonding(struct net_device *vf_netdev) > if (!ndev) > return NOTIFY_DONE; > > - /* set slave flag before open to prevent IPv6 addrconf */ > + /* Set slave flag and no addrconf flag before open > + * to prevent IPv6 addrconf. > + */ > vf_netdev->flags |= IFF_SLAVE; > + vf_netdev->priv_flags |= IFF_NO_ADDRCONF; > return NOTIFY_DONE; > } > Thanks this worked originally but got broken, please add: Fixes: 8a321cf7becc ("net: add IFF_NO_ADDRCONF and use it in bonding to prevent ipv6 addrconf") Cc: lucien.xin@gmail.com Looks like team and failover have the same problem.