[ 1916.836323] br0: port 1(dummy0) entered blocking state
[ 1916.836398] br0: port 1(dummy0) entered disabled state
[ 1916.836471] dummy0: entered allmulticast mode
[ 1916.836552] dummy0: entered promiscuous mode
[ 1916.840061] br0: port 1(dummy0) entered blocking state
[ 1916.840091] br0: port 1(dummy0) entered forwarding state
[ 1917.082056] dummy0: left allmulticast mode
[ 1917.082090] dummy0: left promiscuous mode
[ 1917.082122] br0: port 1(dummy0) entered disabled state