[ 1811.574422] br0: port 1(dummy0) entered blocking state
[ 1811.574457] br0: port 1(dummy0) entered disabled state
[ 1811.574478] dummy0: entered allmulticast mode
[ 1811.574514] dummy0: entered promiscuous mode
[ 1811.577061] br0: port 1(dummy0) entered blocking state
[ 1811.577109] br0: port 1(dummy0) entered forwarding state
[ 1811.752274] dummy0: left allmulticast mode
[ 1811.752307] dummy0: left promiscuous mode
[ 1811.752334] br0: port 1(dummy0) entered disabled state