[ 1721.808441] br0: port 1(dummy0) entered blocking state
[ 1721.808473] br0: port 1(dummy0) entered disabled state
[ 1721.808506] dummy0: entered allmulticast mode
[ 1721.808554] dummy0: entered promiscuous mode
[ 1721.811254] br0: port 1(dummy0) entered blocking state
[ 1721.811283] br0: port 1(dummy0) entered forwarding state
[ 1722.002631] dummy0: left allmulticast mode
[ 1722.002670] dummy0: left promiscuous mode
[ 1722.002721] br0: port 1(dummy0) entered disabled state