[ 1666.245174] br0: port 1(dummy0) entered blocking state
[ 1666.245224] br0: port 1(dummy0) entered disabled state
[ 1666.245263] dummy0: entered allmulticast mode
[ 1666.245316] dummy0: entered promiscuous mode
[ 1666.249080] br0: port 1(dummy0) entered blocking state
[ 1666.249115] br0: port 1(dummy0) entered forwarding state
[ 1666.530126] dummy0: left allmulticast mode
[ 1666.530169] dummy0: left promiscuous mode
[ 1666.530256] br0: port 1(dummy0) entered disabled state