[ 1574.170456] br0: port 1(dummy0) entered blocking state
[ 1574.170495] br0: port 1(dummy0) entered disabled state
[ 1574.170530] dummy0: entered allmulticast mode
[ 1574.170579] dummy0: entered promiscuous mode
[ 1574.172985] br0: port 1(dummy0) entered blocking state
[ 1574.173018] br0: port 1(dummy0) entered forwarding state
[ 1574.350161] dummy0: left allmulticast mode
[ 1574.350192] dummy0: left promiscuous mode
[ 1574.350219] br0: port 1(dummy0) entered disabled state