[ 1875.336308] br0: port 1(dummy0) entered blocking state
[ 1875.336353] br0: port 1(dummy0) entered disabled state
[ 1875.336388] dummy0: entered allmulticast mode
[ 1875.336443] dummy0: entered promiscuous mode
[ 1875.340061] br0: port 1(dummy0) entered blocking state
[ 1875.340124] br0: port 1(dummy0) entered forwarding state
[ 1875.611244] dummy0: left allmulticast mode
[ 1875.611304] dummy0: left promiscuous mode
[ 1875.611363] br0: port 1(dummy0) entered disabled state