[ 1874.117879] br0: port 1(dummy0) entered blocking state
[ 1874.117955] br0: port 1(dummy0) entered disabled state
[ 1874.118020] dummy0: entered allmulticast mode
[ 1874.118101] dummy0: entered promiscuous mode
[ 1874.121270] br0: port 1(dummy0) entered blocking state
[ 1874.121303] br0: port 1(dummy0) entered forwarding state
[ 1874.365568] dummy0: left allmulticast mode
[ 1874.365637] dummy0: left promiscuous mode
[ 1874.365721] br0: port 1(dummy0) entered disabled state