[ 1558.742642] br0: port 1(dummy0) entered blocking state
[ 1558.742681] br0: port 1(dummy0) entered disabled state
[ 1558.742717] dummy0: entered allmulticast mode
[ 1558.742768] dummy0: entered promiscuous mode
[ 1558.745616] br0: port 1(dummy0) entered blocking state
[ 1558.745680] br0: port 1(dummy0) entered forwarding state
[ 1558.936605] dummy0: left allmulticast mode
[ 1558.936692] dummy0: left promiscuous mode
[ 1558.936787] br0: port 1(dummy0) entered disabled state