[ 1834.893422] br0: port 1(dummy0) entered blocking state
[ 1834.893455] br0: port 1(dummy0) entered disabled state
[ 1834.893478] dummy0: entered allmulticast mode
[ 1834.893526] dummy0: entered promiscuous mode
[ 1834.897118] br0: port 1(dummy0) entered blocking state
[ 1834.897151] br0: port 1(dummy0) entered forwarding state
[ 1835.165878] dummy0: left allmulticast mode
[ 1835.165906] dummy0: left promiscuous mode
[ 1835.165926] br0: port 1(dummy0) entered disabled state