[ 1660.690965] br0: port 1(dummy0) entered blocking state
[ 1660.691003] br0: port 1(dummy0) entered disabled state
[ 1660.691033] dummy0: entered allmulticast mode
[ 1660.691085] dummy0: entered promiscuous mode
[ 1660.694343] br0: port 1(dummy0) entered blocking state
[ 1660.694407] br0: port 1(dummy0) entered forwarding state
[ 1660.919218] dummy0: left allmulticast mode
[ 1660.919256] dummy0: left promiscuous mode
[ 1660.919287] br0: port 1(dummy0) entered disabled state