[ 1856.036710][T19812] br0: port 1(dummy0) entered blocking state
[ 1856.037403][T19812] br0: port 1(dummy0) entered disabled state
[ 1856.037570][T19812] dummy0: entered allmulticast mode
[ 1856.038512][T19812] dummy0: entered promiscuous mode
[ 1856.066939][T19813] br0: port 1(dummy0) entered blocking state
[ 1856.067497][T19813] br0: port 1(dummy0) entered forwarding state
[ 1858.016887][   T12] dummy0: left allmulticast mode
[ 1858.017826][   T12] dummy0: left promiscuous mode
[ 1858.018069][   T12] br0: port 1(dummy0) entered disabled state