Commit 4a6e3c5d authored Apr 12, 2017 by David Ahern Committed by David S. Miller Apr 17, 2017

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: 5cb04436 ("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>

parent 70d40b36

net/ipv6/ndisc.c

+2 −0

Original line number	Original line	Diff line number	Diff line
	@@ -1748,6 +1748,8 @@ static int ndisc_netdev_event(struct notifier_block *this, unsigned long event,
	case NETDEV_CHANGEADDR:		case NETDEV_CHANGEADDR:
	neigh_changeaddr(&nd_tbl, dev);		neigh_changeaddr(&nd_tbl, dev);
	fib6_run_gc(0, net, false);		fib6_run_gc(0, net, false);
			/* fallthrough */
			case NETDEV_UP:
	idev = in6_dev_get(dev);		idev = in6_dev_get(dev);
	if (!idev)		if (!idev)
	break;		break;

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