[ 1756.621158] br0: port 1(dummy0) entered blocking state
[ 1756.621200] br0: port 1(dummy0) entered disabled state
[ 1756.621234] dummy0: entered allmulticast mode
[ 1756.621285] dummy0: entered promiscuous mode
[ 1756.624130] br0: port 1(dummy0) entered blocking state
[ 1756.624194] br0: port 1(dummy0) entered forwarding state
[ 1756.810003] dummy0: left allmulticast mode
[ 1756.810042] dummy0: left promiscuous mode
[ 1756.810084] br0: port 1(dummy0) entered disabled state