[ 1908.221229] br0: port 1(dummy0) entered blocking state
[ 1908.221266] br0: port 1(dummy0) entered disabled state
[ 1908.221298] dummy0: entered allmulticast mode
[ 1908.221349] dummy0: entered promiscuous mode
[ 1908.224184] br0: port 1(dummy0) entered blocking state
[ 1908.224245] br0: port 1(dummy0) entered forwarding state
[ 1908.406909] dummy0: left allmulticast mode
[ 1908.406936] dummy0: left promiscuous mode
[ 1908.406963] br0: port 1(dummy0) entered disabled state