[ 2267.945385][T15306] br0: port 1(dummy0) entered blocking state
[ 2267.945629][T15306] br0: port 1(dummy0) entered disabled state
[ 2267.945856][T15306] dummy0: entered allmulticast mode
[ 2267.946961][T15306] dummy0: entered promiscuous mode
[ 2267.979998][T15307] br0: port 1(dummy0) entered blocking state
[ 2267.980340][T15307] br0: port 1(dummy0) entered forwarding state
[ 2270.385155][   T12] dummy0: left allmulticast mode
[ 2270.385899][   T12] dummy0: left promiscuous mode
[ 2270.386212][   T12] br0: port 1(dummy0) entered disabled state