[ 1743.180867] br0: port 1(dummy0) entered blocking state
[ 1743.180920] br0: port 1(dummy0) entered disabled state
[ 1743.180963] dummy0: entered allmulticast mode
[ 1743.181022] dummy0: entered promiscuous mode
[ 1743.184867] br0: port 1(dummy0) entered blocking state
[ 1743.184935] br0: port 1(dummy0) entered forwarding state
[ 1743.465533] dummy0: left allmulticast mode
[ 1743.465577] dummy0: left promiscuous mode
[ 1743.465611] br0: port 1(dummy0) entered disabled state