[ 1750.529780] br0: port 1(dummy0) entered blocking state
[ 1750.529824] br0: port 1(dummy0) entered disabled state
[ 1750.529855] dummy0: entered allmulticast mode
[ 1750.529903] dummy0: entered promiscuous mode
[ 1750.532468] br0: port 1(dummy0) entered blocking state
[ 1750.532528] br0: port 1(dummy0) entered forwarding state
[ 1750.728054] dummy0: left allmulticast mode
[ 1750.728085] dummy0: left promiscuous mode
[ 1750.728112] br0: port 1(dummy0) entered disabled state