[ 1979.750405][T10439] br0: port 1(dummy0) entered blocking state
[ 1979.750612][T10439] br0: port 1(dummy0) entered disabled state
[ 1979.750790][T10439] dummy0: entered allmulticast mode
[ 1979.752524][T10439] dummy0: entered promiscuous mode
[ 1979.779153][T10440] br0: port 1(dummy0) entered blocking state
[ 1979.779689][T10440] br0: port 1(dummy0) entered forwarding state
[ 1981.535285][   T12] dummy0: left allmulticast mode
[ 1981.535573][   T12] dummy0: left promiscuous mode
[ 1981.535794][   T12] br0: port 1(dummy0) entered disabled state