[ 1568.245675] br0: port 1(dummy0) entered blocking state
[ 1568.245720] br0: port 1(dummy0) entered disabled state
[ 1568.245752] dummy0: entered allmulticast mode
[ 1568.245808] dummy0: entered promiscuous mode
[ 1568.248237] br0: port 1(dummy0) entered blocking state
[ 1568.248273] br0: port 1(dummy0) entered forwarding state
[ 1568.425443] dummy0: left allmulticast mode
[ 1568.425483] dummy0: left promiscuous mode
[ 1568.425511] br0: port 1(dummy0) entered disabled state