[ 1811.010762] br0: port 1(dummy0) entered blocking state
[ 1811.010835] br0: port 1(dummy0) entered disabled state
[ 1811.010901] dummy0: entered allmulticast mode
[ 1811.010983] dummy0: entered promiscuous mode
[ 1811.013731] br0: port 1(dummy0) entered blocking state
[ 1811.013763] br0: port 1(dummy0) entered forwarding state
[ 1811.202352] dummy0: left allmulticast mode
[ 1811.202417] dummy0: left promiscuous mode
[ 1811.202479] br0: port 1(dummy0) entered disabled state