[ 1855.514393] br0: port 1(dummy0) entered blocking state
[ 1855.514425] br0: port 1(dummy0) entered disabled state
[ 1855.514447] dummy0: entered allmulticast mode
[ 1855.514484] dummy0: entered promiscuous mode
[ 1855.517225] br0: port 1(dummy0) entered blocking state
[ 1855.517276] br0: port 1(dummy0) entered forwarding state
[ 1855.705870] dummy0: left allmulticast mode
[ 1855.705897] dummy0: left promiscuous mode
[ 1855.705916] br0: port 1(dummy0) entered disabled state