[ 1812.691623] br0: port 1(dummy0) entered blocking state
[ 1812.691674] br0: port 1(dummy0) entered disabled state
[ 1812.691717] dummy0: entered allmulticast mode
[ 1812.691768] dummy0: entered promiscuous mode
[ 1812.695361] br0: port 1(dummy0) entered blocking state
[ 1812.695427] br0: port 1(dummy0) entered forwarding state
[ 1812.966876] dummy0: left allmulticast mode
[ 1812.966918] dummy0: left promiscuous mode
[ 1812.966952] br0: port 1(dummy0) entered disabled state