| From | Ben Hutchings <> | Date | Fri, 18 Aug 2017 14:13:20 +0100 | Subject | [PATCH 3.16 053/134] net: ipv6: send unsolicited NA on admin up |
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3.16.47-rc1 review patch. If anyone has any objections, please let me know.
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From: David Ahern <dsa@cumulusnetworks.com>
commit 4a6e3c5def13c91adf2acc613837001f09af3baa upstream.
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: Ben Hutchings <ben@decadent.org.uk> --- net/ipv6/ndisc.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/net/ipv6/ndisc.c +++ b/net/ipv6/ndisc.c @@ -1605,6 +1605,8 @@ 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;
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