[ 1886.670387] br0: port 1(dummy0) entered blocking state
[ 1886.670455] br0: port 1(dummy0) entered disabled state
[ 1886.670522] dummy0: entered allmulticast mode
[ 1886.670603] dummy0: entered promiscuous mode
[ 1886.674099] br0: port 1(dummy0) entered blocking state
[ 1886.674133] br0: port 1(dummy0) entered forwarding state
[ 1886.921802] dummy0: left allmulticast mode
[ 1886.921948] dummy0: left promiscuous mode
[ 1886.922030] br0: port 1(dummy0) entered disabled state