gre: allow changing mac address when device is up

There is no need to require forcing device down on a Ethernet GRE (gretap)
tunnel to change the MAC address.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index c5a557a06a31ae589a0938d2d1a12073ae3706df..9b842544aea3d8155a28a4b9f8030901bb712a9c 100644 (file)
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -649,6 +649,7 @@ static void ipgre_tap_setup(struct net_device *dev)
 {
        ether_setup(dev);
        dev->netdev_ops         = &gre_tap_netdev_ops;
+       dev->priv_flags         |= IFF_LIVE_ADDR_CHANGE;
        ip_tunnel_setup(dev, gre_tap_net_id);
 }