[ 1876.644983] br0: port 1(dummy0) entered blocking state
[ 1876.645027] br0: port 1(dummy0) entered disabled state
[ 1876.645062] dummy0: entered allmulticast mode
[ 1876.645109] dummy0: entered promiscuous mode
[ 1876.648569] br0: port 1(dummy0) entered blocking state
[ 1876.648604] br0: port 1(dummy0) entered forwarding state
[ 1876.897284] dummy0: left allmulticast mode
[ 1876.897327] dummy0: left promiscuous mode
[ 1876.897358] br0: port 1(dummy0) entered disabled state