Revert "rtnetlink: Do not generate notifications for CHANGEADDR event"

[ Upstream commit 3753654e541938717b13f2b25791c3171a3a06aa ]

This reverts commit cd8966e75ed3c6b41a37047a904617bc44fa481f.

The duplicate CHANGEADDR event message is sent regardless of link
status whereas the setlink changes only generate a notification when
the link is up. Not sending a notification when the link is down breaks
dhcpcd which only processes hwaddr changes when the link is down.

Fixes reported regression:
    https://bugzilla.kernel.org/show_bug.cgi?id=196355

Reported-by: Yaroslav Isakov <yaroslav.isakov@gmail.com>
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 467a2f4510a74cad48209b696532838d1edcf96e..099eca1524c063b735658339804d62d342de47f9 100644 (file)
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -4165,6 +4165,7 @@ static int rtnetlink_event(struct notifier_block *this, unsigned long event, voi
 
        switch (event) {
        case NETDEV_REBOOT:
+       case NETDEV_CHANGEADDR:
        case NETDEV_CHANGENAME:
        case NETDEV_FEAT_CHANGE:
        case NETDEV_BONDING_FAILOVER: