[ 1876.389617] br0: port 1(dummy0) entered blocking state
[ 1876.389689] br0: port 1(dummy0) entered disabled state
[ 1876.389761] dummy0: entered allmulticast mode
[ 1876.389851] dummy0: entered promiscuous mode
[ 1876.393342] br0: port 1(dummy0) entered blocking state
[ 1876.393374] br0: port 1(dummy0) entered forwarding state
[ 1876.653446] dummy0: left allmulticast mode
[ 1876.653508] dummy0: left promiscuous mode
[ 1876.653579] br0: port 1(dummy0) entered disabled state