[ 1829.686611][ T8295] br0: port 1(dummy0) entered blocking state
[ 1829.686856][ T8295] br0: port 1(dummy0) entered disabled state
[ 1829.687096][ T8295] dummy0: entered allmulticast mode
[ 1829.688108][ T8295] dummy0: entered promiscuous mode
[ 1829.720683][ T8296] br0: port 1(dummy0) entered blocking state
[ 1829.721043][ T8296] br0: port 1(dummy0) entered forwarding state
[ 1831.609572][   T12] dummy0: left allmulticast mode
[ 1831.609869][   T12] dummy0: left promiscuous mode
[ 1831.610094][   T12] br0: port 1(dummy0) entered disabled state