[ 1690.707652] br0: port 1(dummy0) entered blocking state
[ 1690.707693] br0: port 1(dummy0) entered disabled state
[ 1690.707731] dummy0: entered allmulticast mode
[ 1690.707784] dummy0: entered promiscuous mode
[ 1690.710358] br0: port 1(dummy0) entered blocking state
[ 1690.710418] br0: port 1(dummy0) entered forwarding state
[ 1690.889806] dummy0: left allmulticast mode
[ 1690.889868] dummy0: left promiscuous mode
[ 1690.889908] br0: port 1(dummy0) entered disabled state