[ 1864.639280] br0: port 1(dummy0) entered blocking state
[ 1864.639357] br0: port 1(dummy0) entered disabled state
[ 1864.639423] dummy0: entered allmulticast mode
[ 1864.639506] dummy0: entered promiscuous mode
[ 1864.642944] br0: port 1(dummy0) entered blocking state
[ 1864.642976] br0: port 1(dummy0) entered forwarding state
[ 1864.890944] dummy0: left allmulticast mode
[ 1864.890981] dummy0: left promiscuous mode
[ 1864.891063] br0: port 1(dummy0) entered disabled state