[ 1728.591118] br0: port 1(dummy0) entered blocking state
[ 1728.591194] br0: port 1(dummy0) entered disabled state
[ 1728.591259] dummy0: entered allmulticast mode
[ 1728.591348] dummy0: entered promiscuous mode
[ 1728.594095] br0: port 1(dummy0) entered blocking state
[ 1728.594126] br0: port 1(dummy0) entered forwarding state
[ 1728.779961] dummy0: left allmulticast mode
[ 1728.780025] dummy0: left promiscuous mode
[ 1728.780079] br0: port 1(dummy0) entered disabled state