[ 2181.425403][T12982] br0: port 1(dummy0) entered blocking state
[ 2181.425612][T12982] br0: port 1(dummy0) entered disabled state
[ 2181.425789][T12982] dummy0: entered allmulticast mode
[ 2181.427360][T12982] dummy0: entered promiscuous mode
[ 2181.449585][T12983] br0: port 1(dummy0) entered blocking state
[ 2181.449843][T12983] br0: port 1(dummy0) entered forwarding state
[ 2183.390929][   T12] dummy0: left allmulticast mode
[ 2183.391211][   T12] dummy0: left promiscuous mode
[ 2183.391427][   T12] br0: port 1(dummy0) entered disabled state