[ 1960.804663][ T2607] br0: port 1(dummy0) entered blocking state
[ 1960.804850][ T2607] br0: port 1(dummy0) entered disabled state
[ 1960.805008][ T2607] dummy0: entered allmulticast mode
[ 1960.805870][ T2607] dummy0: entered promiscuous mode
[ 1960.840415][ T2608] br0: port 1(dummy0) entered blocking state
[ 1960.840684][ T2608] br0: port 1(dummy0) entered forwarding state
[ 1962.721220][   T12] dummy0: left allmulticast mode
[ 1962.722199][   T12] dummy0: left promiscuous mode
[ 1962.722422][   T12] br0: port 1(dummy0) entered disabled state