[ 1917.890260] br0: port 1(dummy0) entered blocking state
[ 1917.890308] br0: port 1(dummy0) entered disabled state
[ 1917.890339] dummy0: entered allmulticast mode
[ 1917.890385] dummy0: entered promiscuous mode
[ 1917.893966] br0: port 1(dummy0) entered blocking state
[ 1917.894001] br0: port 1(dummy0) entered forwarding state
[ 1918.170398] dummy0: left allmulticast mode
[ 1918.170466] dummy0: left promiscuous mode
[ 1918.170526] br0: port 1(dummy0) entered disabled state