[ 1797.211582] br0: port 1(dummy0) entered blocking state
[ 1797.211624] br0: port 1(dummy0) entered disabled state
[ 1797.211658] dummy0: entered allmulticast mode
[ 1797.211713] dummy0: entered promiscuous mode
[ 1797.214465] br0: port 1(dummy0) entered blocking state
[ 1797.214496] br0: port 1(dummy0) entered forwarding state
[ 1797.405870] dummy0: left allmulticast mode
[ 1797.405903] dummy0: left promiscuous mode
[ 1797.405934] br0: port 1(dummy0) entered disabled state