[ 1873.840370] br0: port 1(dummy0) entered blocking state
[ 1873.840440] br0: port 1(dummy0) entered disabled state
[ 1873.840506] dummy0: entered allmulticast mode
[ 1873.840589] dummy0: entered promiscuous mode
[ 1873.843896] br0: port 1(dummy0) entered blocking state
[ 1873.843930] br0: port 1(dummy0) entered forwarding state
[ 1874.049506] dummy0: left allmulticast mode
[ 1874.049569] dummy0: left promiscuous mode
[ 1874.049632] br0: port 1(dummy0) entered disabled state