[ 1722.716001] br0: port 1(dummy0) entered blocking state
[ 1722.716043] br0: port 1(dummy0) entered disabled state
[ 1722.716076] dummy0: entered allmulticast mode
[ 1722.716128] dummy0: entered promiscuous mode
[ 1722.719360] br0: port 1(dummy0) entered blocking state
[ 1722.719426] br0: port 1(dummy0) entered forwarding state
[ 1722.968688] dummy0: left allmulticast mode
[ 1722.968761] dummy0: left promiscuous mode
[ 1722.968839] br0: port 1(dummy0) entered disabled state