[ 1873.002194] br0: port 1(dummy0) entered blocking state
[ 1873.002271] br0: port 1(dummy0) entered disabled state
[ 1873.002335] dummy0: entered allmulticast mode
[ 1873.002421] dummy0: entered promiscuous mode
[ 1873.005860] br0: port 1(dummy0) entered blocking state
[ 1873.005892] br0: port 1(dummy0) entered forwarding state
[ 1873.266624] dummy0: left allmulticast mode
[ 1873.266661] dummy0: left promiscuous mode
[ 1873.266689] br0: port 1(dummy0) entered disabled state