[ 1631.968052] br0: port 1(dummy0) entered blocking state
[ 1631.968106] br0: port 1(dummy0) entered disabled state
[ 1631.968147] dummy0: entered allmulticast mode
[ 1631.968193] dummy0: entered promiscuous mode
[ 1631.970935] br0: port 1(dummy0) entered blocking state
[ 1631.970967] br0: port 1(dummy0) entered forwarding state
[ 1632.150959] dummy0: left allmulticast mode
[ 1632.150991] dummy0: left promiscuous mode
[ 1632.151018] br0: port 1(dummy0) entered disabled state