[ 1769.262321] br0: port 1(dummy0) entered blocking state
[ 1769.262372] br0: port 1(dummy0) entered disabled state
[ 1769.262410] dummy0: entered allmulticast mode
[ 1769.262463] dummy0: entered promiscuous mode
[ 1769.266020] br0: port 1(dummy0) entered blocking state
[ 1769.266082] br0: port 1(dummy0) entered forwarding state
[ 1769.524687] dummy0: left allmulticast mode
[ 1769.524747] dummy0: left promiscuous mode
[ 1769.524820] br0: port 1(dummy0) entered disabled state