[ 1890.277070] br0: port 1(dummy0) entered blocking state
[ 1890.277109] br0: port 1(dummy0) entered disabled state
[ 1890.277145] dummy0: entered allmulticast mode
[ 1890.277189] dummy0: entered promiscuous mode
[ 1890.280682] br0: port 1(dummy0) entered blocking state
[ 1890.280746] br0: port 1(dummy0) entered forwarding state
[ 1890.535628] dummy0: left allmulticast mode
[ 1890.535666] dummy0: left promiscuous mode
[ 1890.535696] br0: port 1(dummy0) entered disabled state