[ 1946.294748] br0: port 1(dummy0) entered blocking state
[ 1946.294799] br0: port 1(dummy0) entered disabled state
[ 1946.294834] dummy0: entered allmulticast mode
[ 1946.294885] dummy0: entered promiscuous mode
[ 1946.298431] br0: port 1(dummy0) entered blocking state
[ 1946.298499] br0: port 1(dummy0) entered forwarding state
[ 1946.564696] dummy0: left allmulticast mode
[ 1946.564737] dummy0: left promiscuous mode
[ 1946.564769] br0: port 1(dummy0) entered disabled state