[ 1709.772136] br0: port 1(dummy0) entered blocking state
[ 1709.772179] br0: port 1(dummy0) entered disabled state
[ 1709.772215] dummy0: entered allmulticast mode
[ 1709.772266] dummy0: entered promiscuous mode
[ 1709.775113] br0: port 1(dummy0) entered blocking state
[ 1709.775182] br0: port 1(dummy0) entered forwarding state
[ 1709.972661] dummy0: left allmulticast mode
[ 1709.972698] dummy0: left promiscuous mode
[ 1709.972728] br0: port 1(dummy0) entered disabled state