[ 1912.123447] br0: port 1(dummy0) entered blocking state
[ 1912.123500] br0: port 1(dummy0) entered disabled state
[ 1912.123528] dummy0: entered allmulticast mode
[ 1912.123578] dummy0: entered promiscuous mode
[ 1912.127115] br0: port 1(dummy0) entered blocking state
[ 1912.127181] br0: port 1(dummy0) entered forwarding state
[ 1912.391950] dummy0: left allmulticast mode
[ 1912.391991] dummy0: left promiscuous mode
[ 1912.392020] br0: port 1(dummy0) entered disabled state