[ 1755.838577] br0: port 1(dummy0) entered blocking state
[ 1755.838629] br0: port 1(dummy0) entered disabled state
[ 1755.838662] dummy0: entered allmulticast mode
[ 1755.838723] dummy0: entered promiscuous mode
[ 1755.841662] br0: port 1(dummy0) entered blocking state
[ 1755.841696] br0: port 1(dummy0) entered forwarding state
[ 1756.027499] dummy0: left allmulticast mode
[ 1756.027540] dummy0: left promiscuous mode
[ 1756.027577] br0: port 1(dummy0) entered disabled state