[ 1786.297359] br0: port 1(dummy0) entered blocking state
[ 1786.297435] br0: port 1(dummy0) entered disabled state
[ 1786.297503] dummy0: entered allmulticast mode
[ 1786.297583] dummy0: entered promiscuous mode
[ 1786.301283] br0: port 1(dummy0) entered blocking state
[ 1786.301325] br0: port 1(dummy0) entered forwarding state
[ 1786.577924] dummy0: left allmulticast mode
[ 1786.577961] dummy0: left promiscuous mode
[ 1786.577992] br0: port 1(dummy0) entered disabled state