[ 1619.753299] br0: port 1(dummy0) entered blocking state
[ 1619.753388] br0: port 1(dummy0) entered disabled state
[ 1619.753456] dummy0: entered allmulticast mode
[ 1619.753564] dummy0: entered promiscuous mode
[ 1619.756206] br0: port 1(dummy0) entered blocking state
[ 1619.756242] br0: port 1(dummy0) entered forwarding state
[ 1619.945571] dummy0: left allmulticast mode
[ 1619.945609] dummy0: left promiscuous mode
[ 1619.945636] br0: port 1(dummy0) entered disabled state