[ 1714.494674] br0: port 1(dummy0) entered blocking state
[ 1714.494699] br0: port 1(dummy0) entered disabled state
[ 1714.494720] dummy0: entered allmulticast mode
[ 1714.494752] dummy0: entered promiscuous mode
[ 1714.497285] br0: port 1(dummy0) entered blocking state
[ 1714.497305] br0: port 1(dummy0) entered forwarding state
[ 1714.670155] dummy0: left allmulticast mode
[ 1714.670206] dummy0: left promiscuous mode
[ 1714.670254] br0: port 1(dummy0) entered disabled state