[ 1696.497443] br0: port 1(dummy0) entered blocking state
[ 1696.497489] br0: port 1(dummy0) entered disabled state
[ 1696.497527] dummy0: entered allmulticast mode
[ 1696.497577] dummy0: entered promiscuous mode
[ 1696.500471] br0: port 1(dummy0) entered blocking state
[ 1696.500534] br0: port 1(dummy0) entered forwarding state
[ 1696.687884] dummy0: left allmulticast mode
[ 1696.687924] dummy0: left promiscuous mode
[ 1696.687954] br0: port 1(dummy0) entered disabled state