[ 1666.085761] br0: port 1(dummy0) entered blocking state
[ 1666.085810] br0: port 1(dummy0) entered disabled state
[ 1666.085846] dummy0: entered allmulticast mode
[ 1666.085898] dummy0: entered promiscuous mode
[ 1666.088768] br0: port 1(dummy0) entered blocking state
[ 1666.088837] br0: port 1(dummy0) entered forwarding state
[ 1666.289721] dummy0: left allmulticast mode
[ 1666.289770] dummy0: left promiscuous mode
[ 1666.289856] br0: port 1(dummy0) entered disabled state