Return-Path: From: Sasha Levin To: "linux-kernel@vger.kernel.org" , "stable@vger.kernel.org" CC: David Ahern , "David S . Miller" , Sasha Levin Subject: [PATCH AUTOSEL for 4.4 022/101] net: ipv6: send unsolicited NA on admin up Date: Thu, 8 Mar 2018 05:01:33 +0000 Message-ID: <20180308050023.8548-22-alexander.levin@microsoft.com> References: <20180308050023.8548-1-alexander.levin@microsoft.com> In-Reply-To: <20180308050023.8548-1-alexander.levin@microsoft.com> Content-Language: en-US Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: From: David Ahern [ Upstream commit 4a6e3c5def13c91adf2acc613837001f09af3baa ] ndisc_notify is the ipv6 equivalent to arp_notify. When arp_notify is set to 1, gratuitous arp requests are sent when the device is brought up. The same is expected when ndisc_notify is set to 1 (per ndisc_notify in Documentation/networking/ip-sysctl.txt). The NA is not sent on NETDEV_UP event; add it. Fixes: 5cb04436eef6 ("ipv6: add knob to send unsolicited ND on link-layer a= ddress change") Signed-off-by: David Ahern Acked-by: Hannes Frederic Sowa Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- net/ipv6/ndisc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c index 84afb9a77278..55810e4899f1 100644 --- a/net/ipv6/ndisc.c +++ b/net/ipv6/ndisc.c @@ -1686,6 +1686,8 @@ static int ndisc_netdev_event(struct notifier_block *= this, unsigned long event, case NETDEV_CHANGEADDR: neigh_changeaddr(&nd_tbl, dev); fib6_run_gc(0, net, false); + /* fallthrough */ + case NETDEV_UP: idev =3D in6_dev_get(dev); if (!idev) break; --=20 2.14.1