From 4a6e3c5def13c91adf2acc613837001f09af3baa Mon Sep 17 00:00:00 2001 From: David Ahern Date: Wed, 12 Apr 2017 11:49:04 -0700 Subject: [PATCH] net: ipv6: send unsolicited NA on admin up 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 Acked-by: Hannes Frederic Sowa Signed-off-by: David S. Miller --- net/ipv6/ndisc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c index b5812b3f7539..b23822e64228 100644 --- a/net/ipv6/ndisc.c +++ b/net/ipv6/ndisc.c @@ -1748,6 +1748,8 @@ 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 = in6_dev_get(dev); if (!idev) break;