[ 1858.225442] br0: port 1(dummy0) entered blocking state
[ 1858.225483] br0: port 1(dummy0) entered disabled state
[ 1858.225528] dummy0: entered allmulticast mode
[ 1858.225592] dummy0: entered promiscuous mode
[ 1858.229073] br0: port 1(dummy0) entered blocking state
[ 1858.229140] br0: port 1(dummy0) entered forwarding state
[ 1858.500476] dummy0: left allmulticast mode
[ 1858.500518] dummy0: left promiscuous mode
[ 1858.500548] br0: port 1(dummy0) entered disabled state