[ 1774.379500] br0: port 1(dummy0) entered blocking state
[ 1774.379537] br0: port 1(dummy0) entered disabled state
[ 1774.379578] dummy0: entered allmulticast mode
[ 1774.379633] dummy0: entered promiscuous mode
[ 1774.382433] br0: port 1(dummy0) entered blocking state
[ 1774.382463] br0: port 1(dummy0) entered forwarding state
[ 1774.576090] dummy0: left allmulticast mode
[ 1774.576122] dummy0: left promiscuous mode
[ 1774.576151] br0: port 1(dummy0) entered disabled state