[ 2180.541492][ T9141] br0: port 1(dummy0) entered blocking state
[ 2180.541696][ T9141] br0: port 1(dummy0) entered disabled state
[ 2180.541887][ T9141] dummy0: entered allmulticast mode
[ 2180.543200][ T9141] dummy0: entered promiscuous mode
[ 2180.574483][ T9142] br0: port 1(dummy0) entered blocking state
[ 2180.575126][ T9142] br0: port 1(dummy0) entered forwarding state
[ 2182.653111][   T12] dummy0: left allmulticast mode
[ 2182.653402][   T12] dummy0: left promiscuous mode
[ 2182.653620][   T12] br0: port 1(dummy0) entered disabled state