[ 1813.019987] br0: port 1(dummy0) entered blocking state
[ 1813.020019] br0: port 1(dummy0) entered disabled state
[ 1813.020042] dummy0: entered allmulticast mode
[ 1813.020082] dummy0: entered promiscuous mode
[ 1813.023339] br0: port 1(dummy0) entered blocking state
[ 1813.023362] br0: port 1(dummy0) entered forwarding state
[ 1813.260802] dummy0: left allmulticast mode
[ 1813.260828] dummy0: left promiscuous mode
[ 1813.260849] br0: port 1(dummy0) entered disabled state