[ 1801.994792] br0: port 1(dummy0) entered blocking state
[ 1801.994836] br0: port 1(dummy0) entered disabled state
[ 1801.994870] dummy0: entered allmulticast mode
[ 1801.994920] dummy0: entered promiscuous mode
[ 1801.998401] br0: port 1(dummy0) entered blocking state
[ 1801.998434] br0: port 1(dummy0) entered forwarding state
[ 1802.245072] dummy0: left allmulticast mode
[ 1802.245135] dummy0: left promiscuous mode
[ 1802.245199] br0: port 1(dummy0) entered disabled state