[ 1578.076928] br0: port 1(dummy0) entered blocking state
[ 1578.076968] br0: port 1(dummy0) entered disabled state
[ 1578.077005] dummy0: entered allmulticast mode
[ 1578.077053] dummy0: entered promiscuous mode
[ 1578.079845] br0: port 1(dummy0) entered blocking state
[ 1578.079905] br0: port 1(dummy0) entered forwarding state
[ 1578.262306] dummy0: left allmulticast mode
[ 1578.262341] dummy0: left promiscuous mode
[ 1578.262373] br0: port 1(dummy0) entered disabled state