[ 1702.029934] br0: port 1(dummy0) entered blocking state
[ 1702.030009] br0: port 1(dummy0) entered disabled state
[ 1702.030079] dummy0: entered allmulticast mode
[ 1702.030164] dummy0: entered promiscuous mode
[ 1702.033512] br0: port 1(dummy0) entered blocking state
[ 1702.033548] br0: port 1(dummy0) entered forwarding state
[ 1702.248492] dummy0: left allmulticast mode
[ 1702.248557] dummy0: left promiscuous mode
[ 1702.248621] br0: port 1(dummy0) entered disabled state