[ 1897.727189] br0: port 1(dummy0) entered blocking state
[ 1897.727260] br0: port 1(dummy0) entered disabled state
[ 1897.727329] dummy0: entered allmulticast mode
[ 1897.727408] dummy0: entered promiscuous mode
[ 1897.731014] br0: port 1(dummy0) entered blocking state
[ 1897.731046] br0: port 1(dummy0) entered forwarding state
[ 1897.991013] dummy0: left allmulticast mode
[ 1897.991041] dummy0: left promiscuous mode
[ 1897.991073] br0: port 1(dummy0) entered disabled state