[ 1683.907011] br0: port 1(dummy0) entered blocking state
[ 1683.907053] br0: port 1(dummy0) entered disabled state
[ 1683.907093] dummy0: entered allmulticast mode
[ 1683.907141] dummy0: entered promiscuous mode
[ 1683.909634] br0: port 1(dummy0) entered blocking state
[ 1683.909695] br0: port 1(dummy0) entered forwarding state
[ 1684.088674] dummy0: left allmulticast mode
[ 1684.088708] dummy0: left promiscuous mode
[ 1684.088791] br0: port 1(dummy0) entered disabled state