[ 1857.577874] br0: port 1(dummy0) entered blocking state
[ 1857.577915] br0: port 1(dummy0) entered disabled state
[ 1857.577952] dummy0: entered allmulticast mode
[ 1857.578006] dummy0: entered promiscuous mode
[ 1857.581600] br0: port 1(dummy0) entered blocking state
[ 1857.581664] br0: port 1(dummy0) entered forwarding state
[ 1857.836689] dummy0: left allmulticast mode
[ 1857.836722] dummy0: left promiscuous mode
[ 1857.836779] br0: port 1(dummy0) entered disabled state