[ 1734.197080] br0: port 1(dummy0) entered blocking state
[ 1734.197125] br0: port 1(dummy0) entered disabled state
[ 1734.197161] dummy0: entered allmulticast mode
[ 1734.197216] dummy0: entered promiscuous mode
[ 1734.200500] br0: port 1(dummy0) entered blocking state
[ 1734.200562] br0: port 1(dummy0) entered forwarding state
[ 1734.418902] dummy0: left allmulticast mode
[ 1734.418938] dummy0: left promiscuous mode
[ 1734.418969] br0: port 1(dummy0) entered disabled state