[ 1751.012938] br0: port 1(dummy0) entered blocking state
[ 1751.012989] br0: port 1(dummy0) entered disabled state
[ 1751.013026] dummy0: entered allmulticast mode
[ 1751.013082] dummy0: entered promiscuous mode
[ 1751.016625] br0: port 1(dummy0) entered blocking state
[ 1751.016656] br0: port 1(dummy0) entered forwarding state
[ 1751.284423] dummy0: left allmulticast mode
[ 1751.284464] dummy0: left promiscuous mode
[ 1751.284494] br0: port 1(dummy0) entered disabled state