[ 2012.621917][T28020] br0: port 1(dummy0) entered blocking state
[ 2012.622123][T28020] br0: port 1(dummy0) entered disabled state
[ 2012.622287][T28020] dummy0: entered allmulticast mode
[ 2012.623588][T28020] dummy0: entered promiscuous mode
[ 2012.658060][T28021] br0: port 1(dummy0) entered blocking state
[ 2012.658421][T28021] br0: port 1(dummy0) entered forwarding state
[ 2014.506311][   T12] dummy0: left allmulticast mode
[ 2014.507252][   T12] dummy0: left promiscuous mode
[ 2014.507513][   T12] br0: port 1(dummy0) entered disabled state