[ 2181.650702][ T9592] br0: port 1(dummy0) entered blocking state
[ 2181.650908][ T9592] br0: port 1(dummy0) entered disabled state
[ 2181.651083][ T9592] dummy0: entered allmulticast mode
[ 2181.651970][ T9592] dummy0: entered promiscuous mode
[ 2181.674750][ T9593] br0: port 1(dummy0) entered blocking state
[ 2181.674939][ T9593] br0: port 1(dummy0) entered forwarding state
[ 2183.681910][   T12] dummy0: left allmulticast mode
[ 2183.682082][   T12] dummy0: left promiscuous mode
[ 2183.682308][   T12] br0: port 1(dummy0) entered disabled state