[ 1602.697072] br0: port 1(dummy0) entered blocking state
[ 1602.697116] br0: port 1(dummy0) entered disabled state
[ 1602.697145] dummy0: entered allmulticast mode
[ 1602.697219] dummy0: entered promiscuous mode
[ 1602.699524] br0: port 1(dummy0) entered blocking state
[ 1602.699559] br0: port 1(dummy0) entered forwarding state
[ 1602.866349] dummy0: left allmulticast mode
[ 1602.866391] dummy0: left promiscuous mode
[ 1602.866437] br0: port 1(dummy0) entered disabled state