[ 1937.542369][T17772] br0: port 1(dummy0) entered blocking state
[ 1937.542598][T17772] br0: port 1(dummy0) entered disabled state
[ 1937.542856][T17772] dummy0: entered allmulticast mode
[ 1937.544469][T17772] dummy0: entered promiscuous mode
[ 1937.572554][T17773] br0: port 1(dummy0) entered blocking state
[ 1937.572884][T17773] br0: port 1(dummy0) entered forwarding state
[ 1939.564193][   T12] dummy0: left allmulticast mode
[ 1939.565061][   T12] dummy0: left promiscuous mode
[ 1939.565295][   T12] br0: port 1(dummy0) entered disabled state