[ 1771.693573] br0: port 1(dummy0) entered blocking state
[ 1771.693665] br0: port 1(dummy0) entered disabled state
[ 1771.693732] dummy0: entered allmulticast mode
[ 1771.693781] dummy0: entered promiscuous mode
[ 1771.698169] br0: port 1(dummy0) entered blocking state
[ 1771.698278] br0: port 1(dummy0) entered forwarding state
[ 1771.997856] dummy0: left allmulticast mode
[ 1771.997943] dummy0: left promiscuous mode
[ 1771.998008] br0: port 1(dummy0) entered disabled state