[ 1887.607230] br0: port 1(dummy0) entered blocking state
[ 1887.607278] br0: port 1(dummy0) entered disabled state
[ 1887.607319] dummy0: entered allmulticast mode
[ 1887.607376] dummy0: entered promiscuous mode
[ 1887.610976] br0: port 1(dummy0) entered blocking state
[ 1887.611008] br0: port 1(dummy0) entered forwarding state
[ 1887.865759] dummy0: left allmulticast mode
[ 1887.865826] dummy0: left promiscuous mode
[ 1887.865901] br0: port 1(dummy0) entered disabled state