Patch "net: ipv6: send unsolicited NA on admin up" has been added to the 3.18-stable tree

Patch "net: ipv6: send unsolicited NA on admin up" has been added to the 3.18-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    net: ipv6: send unsolicited NA on admin up

to the 3.18-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     net-ipv6-send-unsolicited-na-on-admin-up.patch
and it can be found in the queue-3.18 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From foo@baz Thu Mar 22 15:16:04 CET 2018
From: David Ahern <dsa@cumulusnetworks.com>
Date: Wed, 12 Apr 2017 11:49:04 -0700
Subject: net: ipv6: send unsolicited NA on admin up

From: David Ahern <dsa@cumulusnetworks.com>


[ 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 address change")
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/ipv6/ndisc.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -1646,6 +1646,8 @@ static int ndisc_netdev_event(struct not
 	case NETDEV_CHANGEADDR:
 		neigh_changeaddr(&nd_tbl, dev);
 		fib6_run_gc(0, net, false);
+		/* fallthrough */
+	case NETDEV_UP:
 		idev = in6_dev_get(dev);
 		if (!idev)
 			break;


Patches currently in stable-queue which might be from dsa@cumulusnetworks.com are

queue-3.18/net-ipv6-send-unsolicited-na-on-admin-up.patch