[ 1919.093317][T20167] br0: port 1(dummy0) entered blocking state
[ 1919.093560][T20167] br0: port 1(dummy0) entered disabled state
[ 1919.093795][T20167] dummy0: entered allmulticast mode
[ 1919.095434][T20167] dummy0: entered promiscuous mode
[ 1919.124222][T20168] br0: port 1(dummy0) entered blocking state
[ 1919.124502][T20168] br0: port 1(dummy0) entered forwarding state
[ 1920.866863][   T12] dummy0: left allmulticast mode
[ 1920.867154][   T12] dummy0: left promiscuous mode
[ 1920.867367][   T12] br0: port 1(dummy0) entered disabled state