[ 1635.686261] br0: port 1(dummy0) entered blocking state
[ 1635.686304] br0: port 1(dummy0) entered disabled state
[ 1635.686340] dummy0: entered allmulticast mode
[ 1635.686390] dummy0: entered promiscuous mode
[ 1635.689321] br0: port 1(dummy0) entered blocking state
[ 1635.689359] br0: port 1(dummy0) entered forwarding state
[ 1635.894804] dummy0: left allmulticast mode
[ 1635.894853] dummy0: left promiscuous mode
[ 1635.894882] br0: port 1(dummy0) entered disabled state