[ 1696.449057] br0: port 1(dummy0) entered blocking state
[ 1696.449134] br0: port 1(dummy0) entered disabled state
[ 1696.449206] dummy0: entered allmulticast mode
[ 1696.449296] dummy0: entered promiscuous mode
[ 1696.452259] br0: port 1(dummy0) entered blocking state
[ 1696.452292] br0: port 1(dummy0) entered forwarding state
[ 1696.655065] dummy0: left allmulticast mode
[ 1696.655105] dummy0: left promiscuous mode
[ 1696.655162] br0: port 1(dummy0) entered disabled state