[ 2045.266766][ T6978] br0: port 1(dummy0) entered blocking state
[ 2045.266957][ T6978] br0: port 1(dummy0) entered disabled state
[ 2045.267126][ T6978] dummy0: entered allmulticast mode
[ 2045.267966][ T6978] dummy0: entered promiscuous mode
[ 2045.291681][ T6979] br0: port 1(dummy0) entered blocking state
[ 2045.291974][ T6979] br0: port 1(dummy0) entered forwarding state
[ 2047.180364][   T12] dummy0: left allmulticast mode
[ 2047.181066][   T12] dummy0: left promiscuous mode
[ 2047.181512][   T12] br0: port 1(dummy0) entered disabled state