[ 1828.043709] br0: port 1(dummy0) entered blocking state
[ 1828.043753] br0: port 1(dummy0) entered disabled state
[ 1828.043790] dummy0: entered allmulticast mode
[ 1828.043855] dummy0: entered promiscuous mode
[ 1828.047481] br0: port 1(dummy0) entered blocking state
[ 1828.047549] br0: port 1(dummy0) entered forwarding state
[ 1828.321356] dummy0: left allmulticast mode
[ 1828.321391] dummy0: left promiscuous mode
[ 1828.321425] br0: port 1(dummy0) entered disabled state