[ 2107.299458][ T8354] br0: port 1(dummy0) entered blocking state
[ 2107.299645][ T8354] br0: port 1(dummy0) entered disabled state
[ 2107.299804][ T8354] dummy0: entered allmulticast mode
[ 2107.300668][ T8354] dummy0: entered promiscuous mode
[ 2107.323716][ T8355] br0: port 1(dummy0) entered blocking state
[ 2107.324502][ T8355] br0: port 1(dummy0) entered forwarding state
[ 2109.243662][   T12] dummy0: left allmulticast mode
[ 2109.244758][   T12] dummy0: left promiscuous mode
[ 2109.244998][   T12] br0: port 1(dummy0) entered disabled state