[ 1929.557565] br0: port 1(dummy0) entered blocking state
[ 1929.557608] br0: port 1(dummy0) entered disabled state
[ 1929.557644] dummy0: entered allmulticast mode
[ 1929.557693] dummy0: entered promiscuous mode
[ 1929.561199] br0: port 1(dummy0) entered blocking state
[ 1929.561271] br0: port 1(dummy0) entered forwarding state
[ 1929.825823] dummy0: left allmulticast mode
[ 1929.825884] dummy0: left promiscuous mode
[ 1929.825945] br0: port 1(dummy0) entered disabled state