[ 1913.120489] br0: port 1(dummy0) entered blocking state
[ 1913.120531] br0: port 1(dummy0) entered disabled state
[ 1913.120569] dummy0: entered allmulticast mode
[ 1913.120623] dummy0: entered promiscuous mode
[ 1913.124111] br0: port 1(dummy0) entered blocking state
[ 1913.124175] br0: port 1(dummy0) entered forwarding state
[ 1913.393351] dummy0: left allmulticast mode
[ 1913.393378] dummy0: left promiscuous mode
[ 1913.393407] br0: port 1(dummy0) entered disabled state