[ 2048.040826] br0: port 1(dummy0) entered blocking state
[ 2048.040896] br0: port 1(dummy0) entered disabled state
[ 2048.040961] dummy0: entered allmulticast mode
[ 2048.041042] dummy0: entered promiscuous mode
[ 2048.044469] br0: port 1(dummy0) entered blocking state
[ 2048.044501] br0: port 1(dummy0) entered forwarding state
[ 2048.304234] dummy0: left allmulticast mode
[ 2048.304270] dummy0: left promiscuous mode
[ 2048.304298] br0: port 1(dummy0) entered disabled state