[ 2135.494944][ T9429] br0: port 1(dummy0) entered blocking state
[ 2135.495142][ T9429] br0: port 1(dummy0) entered disabled state
[ 2135.495315][ T9429] dummy0: entered allmulticast mode
[ 2135.496167][ T9429] dummy0: entered promiscuous mode
[ 2135.523054][ T9430] br0: port 1(dummy0) entered blocking state
[ 2135.523418][ T9430] br0: port 1(dummy0) entered forwarding state
[ 2137.413310][   T12] dummy0: left allmulticast mode
[ 2137.413468][   T12] dummy0: left promiscuous mode
[ 2137.413660][   T12] br0: port 1(dummy0) entered disabled state