[ 1739.388221] br0: port 1(dummy0) entered blocking state
[ 1739.388273] br0: port 1(dummy0) entered disabled state
[ 1739.388323] dummy0: entered allmulticast mode
[ 1739.388390] dummy0: entered promiscuous mode
[ 1739.391008] br0: port 1(dummy0) entered blocking state
[ 1739.391030] br0: port 1(dummy0) entered forwarding state
[ 1739.562169] dummy0: left allmulticast mode
[ 1739.562192] dummy0: left promiscuous mode
[ 1739.562211] br0: port 1(dummy0) entered disabled state