[ 1669.598063] br0: port 1(dummy0) entered blocking state
[ 1669.598111] br0: port 1(dummy0) entered disabled state
[ 1669.598152] dummy0: entered allmulticast mode
[ 1669.598207] dummy0: entered promiscuous mode
[ 1669.600667] br0: port 1(dummy0) entered blocking state
[ 1669.600726] br0: port 1(dummy0) entered forwarding state
[ 1669.788229] dummy0: left allmulticast mode
[ 1669.788314] dummy0: left promiscuous mode
[ 1669.788373] br0: port 1(dummy0) entered disabled state