[ 1771.008496] br0: port 1(dummy0) entered blocking state
[ 1771.008532] br0: port 1(dummy0) entered disabled state
[ 1771.008571] dummy0: entered allmulticast mode
[ 1771.008618] dummy0: entered promiscuous mode
[ 1771.011360] br0: port 1(dummy0) entered blocking state
[ 1771.011423] br0: port 1(dummy0) entered forwarding state
[ 1771.198022] dummy0: left allmulticast mode
[ 1771.198112] dummy0: left promiscuous mode
[ 1771.198175] br0: port 1(dummy0) entered disabled state