[ 1746.471668] br0: port 1(dummy0) entered blocking state
[ 1746.471710] br0: port 1(dummy0) entered disabled state
[ 1746.471746] dummy0: entered allmulticast mode
[ 1746.471801] dummy0: entered promiscuous mode
[ 1746.475236] br0: port 1(dummy0) entered blocking state
[ 1746.475302] br0: port 1(dummy0) entered forwarding state
[ 1746.761337] dummy0: left allmulticast mode
[ 1746.761373] dummy0: left promiscuous mode
[ 1746.761408] br0: port 1(dummy0) entered disabled state