[ 2123.394011] br0: port 1(dummy0) entered blocking state
[ 2123.394065] br0: port 1(dummy0) entered disabled state
[ 2123.394118] dummy0: entered allmulticast mode
[ 2123.394187] dummy0: entered promiscuous mode
[ 2123.397885] br0: port 1(dummy0) entered blocking state
[ 2123.397905] br0: port 1(dummy0) entered forwarding state
[ 2123.656849] dummy0: left allmulticast mode
[ 2123.656871] dummy0: left promiscuous mode
[ 2123.656889] br0: port 1(dummy0) entered disabled state