[ 1744.419530] br0: port 1(dummy0) entered blocking state
[ 1744.419577] br0: port 1(dummy0) entered disabled state
[ 1744.419610] dummy0: entered allmulticast mode
[ 1744.419661] dummy0: entered promiscuous mode
[ 1744.423246] br0: port 1(dummy0) entered blocking state
[ 1744.423313] br0: port 1(dummy0) entered forwarding state
[ 1744.694213] dummy0: left allmulticast mode
[ 1744.694257] dummy0: left promiscuous mode
[ 1744.694288] br0: port 1(dummy0) entered disabled state