[ 1586.027902] br0: port 1(dummy0) entered blocking state
[ 1586.027977] br0: port 1(dummy0) entered disabled state
[ 1586.028047] dummy0: entered allmulticast mode
[ 1586.028129] dummy0: entered promiscuous mode
[ 1586.030966] br0: port 1(dummy0) entered blocking state
[ 1586.030997] br0: port 1(dummy0) entered forwarding state
[ 1586.215658] dummy0: left allmulticast mode
[ 1586.215694] dummy0: left promiscuous mode
[ 1586.215723] br0: port 1(dummy0) entered disabled state