[ 1912.689940] br0: port 1(dummy0) entered blocking state
[ 1912.689993] br0: port 1(dummy0) entered disabled state
[ 1912.690032] dummy0: entered allmulticast mode
[ 1912.690085] dummy0: entered promiscuous mode
[ 1912.693985] br0: port 1(dummy0) entered blocking state
[ 1912.694049] br0: port 1(dummy0) entered forwarding state
[ 1912.974914] dummy0: left allmulticast mode
[ 1912.975016] dummy0: left promiscuous mode
[ 1912.975116] br0: port 1(dummy0) entered disabled state