[ 1769.373145] br0: port 1(dummy0) entered blocking state
[ 1769.373172] br0: port 1(dummy0) entered disabled state
[ 1769.373193] dummy0: entered allmulticast mode
[ 1769.373229] dummy0: entered promiscuous mode
[ 1769.376001] br0: port 1(dummy0) entered blocking state
[ 1769.376019] br0: port 1(dummy0) entered forwarding state
[ 1769.569961] dummy0: left allmulticast mode
[ 1769.569984] dummy0: left promiscuous mode
[ 1769.570003] br0: port 1(dummy0) entered disabled state