[ 1646.307554] br0: port 1(dummy0) entered blocking state
[ 1646.307597] br0: port 1(dummy0) entered disabled state
[ 1646.307632] dummy0: entered allmulticast mode
[ 1646.307676] dummy0: entered promiscuous mode
[ 1646.310561] br0: port 1(dummy0) entered blocking state
[ 1646.310625] br0: port 1(dummy0) entered forwarding state
[ 1646.502562] dummy0: left allmulticast mode
[ 1646.502592] dummy0: left promiscuous mode
[ 1646.502620] br0: port 1(dummy0) entered disabled state