[ 1747.460671] br0: port 1(dummy0) entered blocking state
[ 1747.460724] br0: port 1(dummy0) entered disabled state
[ 1747.460759] dummy0: entered allmulticast mode
[ 1747.460810] dummy0: entered promiscuous mode
[ 1747.464726] br0: port 1(dummy0) entered blocking state
[ 1747.464771] br0: port 1(dummy0) entered forwarding state
[ 1747.728841] dummy0: left allmulticast mode
[ 1747.728922] dummy0: left promiscuous mode
[ 1747.728989] br0: port 1(dummy0) entered disabled state