[ 1911.414048] br0: port 1(dummy0) entered blocking state
[ 1911.414100] br0: port 1(dummy0) entered disabled state
[ 1911.414137] dummy0: entered allmulticast mode
[ 1911.414187] dummy0: entered promiscuous mode
[ 1911.417793] br0: port 1(dummy0) entered blocking state
[ 1911.417853] br0: port 1(dummy0) entered forwarding state
[ 1911.691790] dummy0: left allmulticast mode
[ 1911.691837] dummy0: left promiscuous mode
[ 1911.691925] br0: port 1(dummy0) entered disabled state