[ 2045.299309][T20893] br0: port 1(dummy0) entered blocking state
[ 2045.299570][T20893] br0: port 1(dummy0) entered disabled state
[ 2045.299809][T20893] dummy0: entered allmulticast mode
[ 2045.300822][T20893] dummy0: entered promiscuous mode
[ 2045.321888][T20894] br0: port 1(dummy0) entered blocking state
[ 2045.322149][T20894] br0: port 1(dummy0) entered forwarding state
[ 2047.279197][   T69] dummy0: left allmulticast mode
[ 2047.279551][   T69] dummy0: left promiscuous mode
[ 2047.279820][   T69] br0: port 1(dummy0) entered disabled state