[ 1931.401522][T32002] br0: port 1(dummy0) entered blocking state
[ 1931.401738][T32002] br0: port 1(dummy0) entered disabled state
[ 1931.401906][T32002] dummy0: entered allmulticast mode
[ 1931.403315][T32002] dummy0: entered promiscuous mode
[ 1931.438629][T32003] br0: port 1(dummy0) entered blocking state
[ 1931.438902][T32003] br0: port 1(dummy0) entered forwarding state
[ 1933.396418][   T12] dummy0: left allmulticast mode
[ 1933.397545][   T12] dummy0: left promiscuous mode
[ 1933.397768][   T12] br0: port 1(dummy0) entered disabled state