[ 2206.598086][ T6982] br0: port 1(dummy0) entered blocking state
[ 2206.598443][ T6982] br0: port 1(dummy0) entered disabled state
[ 2206.598811][ T6982] dummy0: entered allmulticast mode
[ 2206.600029][ T6982] dummy0: entered promiscuous mode
[ 2206.634175][ T6983] br0: port 1(dummy0) entered blocking state
[ 2206.634582][ T6983] br0: port 1(dummy0) entered forwarding state
[ 2209.137850][   T12] dummy0: left allmulticast mode
[ 2209.138652][   T12] dummy0: left promiscuous mode
[ 2209.139226][   T12] br0: port 1(dummy0) entered disabled state