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| author | David Ahern <dsa@cumulusnetworks.com> | 2017-04-12 11:49:04 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-03-24 10:57:32 +0100 |
| commit | f566bb949757cb3312e31b79400c30103d4a8434 (patch) | |
| tree | cf6d5bb105205d9c68d93c12a527e4546e4a3bec /net | |
| parent | e69880c86c7391e7a78eb05faa736fa77a7cf8a7 (diff) | |
| download | linux-stable-f566bb949757cb3312e31b79400c30103d4a8434.tar.gz linux-stable-f566bb949757cb3312e31b79400c30103d4a8434.tar.bz2 linux-stable-f566bb949757cb3312e31b79400c30103d4a8434.zip | |
net: ipv6: send unsolicited NA on admin up
[ 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>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv6/ndisc.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c index a46c50423aec..2e9e0af9e759 100644 --- a/net/ipv6/ndisc.c +++ b/net/ipv6/ndisc.c @@ -1646,6 +1646,8 @@ 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; |