[ 1786.403170] br0: port 1(dummy0) entered blocking state
[ 1786.403213] br0: port 1(dummy0) entered disabled state
[ 1786.403243] dummy0: entered allmulticast mode
[ 1786.403296] dummy0: entered promiscuous mode
[ 1786.406151] br0: port 1(dummy0) entered blocking state
[ 1786.406219] br0: port 1(dummy0) entered forwarding state
[ 1786.602131] dummy0: left allmulticast mode
[ 1786.602231] dummy0: left promiscuous mode
[ 1786.602271] br0: port 1(dummy0) entered disabled state