[ 1605.099288] br0: port 1(dummy0) entered blocking state
[ 1605.099336] br0: port 1(dummy0) entered disabled state
[ 1605.099369] dummy0: entered allmulticast mode
[ 1605.099421] dummy0: entered promiscuous mode
[ 1605.102407] br0: port 1(dummy0) entered blocking state
[ 1605.102498] br0: port 1(dummy0) entered forwarding state
[ 1605.274685] dummy0: left allmulticast mode
[ 1605.274729] dummy0: left promiscuous mode
[ 1605.274760] br0: port 1(dummy0) entered disabled state