[ 1662.900377] br0: port 1(dummy0) entered blocking state
[ 1662.900419] br0: port 1(dummy0) entered disabled state
[ 1662.900451] dummy0: entered allmulticast mode
[ 1662.900503] dummy0: entered promiscuous mode
[ 1662.903239] br0: port 1(dummy0) entered blocking state
[ 1662.903301] br0: port 1(dummy0) entered forwarding state
[ 1663.084197] dummy0: left allmulticast mode
[ 1663.084258] dummy0: left promiscuous mode
[ 1663.084320] br0: port 1(dummy0) entered disabled state