[ 1779.198905] br0: port 1(dummy0) entered blocking state
[ 1779.198948] br0: port 1(dummy0) entered disabled state
[ 1779.198989] dummy0: entered allmulticast mode
[ 1779.199045] dummy0: entered promiscuous mode
[ 1779.202387] br0: port 1(dummy0) entered blocking state
[ 1779.202448] br0: port 1(dummy0) entered forwarding state
[ 1779.456778] dummy0: left allmulticast mode
[ 1779.456840] dummy0: left promiscuous mode
[ 1779.456928] br0: port 1(dummy0) entered disabled state