[ 1890.313814][ T6604] br0: port 1(dummy0) entered blocking state
[ 1890.314018][ T6604] br0: port 1(dummy0) entered disabled state
[ 1890.314220][ T6604] dummy0: entered allmulticast mode
[ 1890.315481][ T6604] dummy0: entered promiscuous mode
[ 1890.345519][ T6605] br0: port 1(dummy0) entered blocking state
[ 1890.345764][ T6605] br0: port 1(dummy0) entered forwarding state
[ 1892.220384][   T12] dummy0: left allmulticast mode
[ 1892.221382][   T12] dummy0: left promiscuous mode
[ 1892.221609][   T12] br0: port 1(dummy0) entered disabled state