[ 1691.702204] br0: port 1(dummy0) entered blocking state
[ 1691.702279] br0: port 1(dummy0) entered disabled state
[ 1691.702350] dummy0: entered allmulticast mode
[ 1691.702457] dummy0: entered promiscuous mode
[ 1691.705315] br0: port 1(dummy0) entered blocking state
[ 1691.705378] br0: port 1(dummy0) entered forwarding state
[ 1691.903463] dummy0: left allmulticast mode
[ 1691.903532] dummy0: left promiscuous mode
[ 1691.903571] br0: port 1(dummy0) entered disabled state