[ 1731.749585] br0: port 1(dummy0) entered blocking state
[ 1731.749666] br0: port 1(dummy0) entered disabled state
[ 1731.749749] dummy0: entered allmulticast mode
[ 1731.749837] dummy0: entered promiscuous mode
[ 1731.753505] br0: port 1(dummy0) entered blocking state
[ 1731.753548] br0: port 1(dummy0) entered forwarding state
[ 1732.029383] dummy0: left allmulticast mode
[ 1732.029423] dummy0: left promiscuous mode
[ 1732.029453] br0: port 1(dummy0) entered disabled state