[ 1893.764101] br0: port 1(dummy0) entered blocking state
[ 1893.764138] br0: port 1(dummy0) entered disabled state
[ 1893.764177] dummy0: entered allmulticast mode
[ 1893.764234] dummy0: entered promiscuous mode
[ 1893.766984] br0: port 1(dummy0) entered blocking state
[ 1893.767017] br0: port 1(dummy0) entered forwarding state
[ 1893.947428] dummy0: left allmulticast mode
[ 1893.947509] dummy0: left promiscuous mode
[ 1893.947570] br0: port 1(dummy0) entered disabled state