[ 2207.917507][ T6766] br0: port 1(dummy0) entered blocking state
[ 2207.917693][ T6766] br0: port 1(dummy0) entered disabled state
[ 2207.917864][ T6766] dummy0: entered allmulticast mode
[ 2207.919873][ T6766] dummy0: entered promiscuous mode
[ 2207.944695][ T6767] br0: port 1(dummy0) entered blocking state
[ 2207.945059][ T6767] br0: port 1(dummy0) entered forwarding state
[ 2210.306975][   T12] dummy0: left allmulticast mode
[ 2210.307626][   T12] dummy0: left promiscuous mode
[ 2210.308069][   T12] br0: port 1(dummy0) entered disabled state