[ 1779.136994] br0: port 1(dummy0) entered blocking state
[ 1779.137030] br0: port 1(dummy0) entered disabled state
[ 1779.137069] dummy0: entered allmulticast mode
[ 1779.137131] dummy0: entered promiscuous mode
[ 1779.140674] br0: port 1(dummy0) entered blocking state
[ 1779.140701] br0: port 1(dummy0) entered forwarding state
[ 1779.391824] dummy0: left allmulticast mode
[ 1779.391855] dummy0: left promiscuous mode
[ 1779.391931] br0: port 1(dummy0) entered disabled state