[ 1738.796740] br0: port 1(dummy0) entered blocking state
[ 1738.796773] br0: port 1(dummy0) entered disabled state
[ 1738.796805] dummy0: entered allmulticast mode
[ 1738.796854] dummy0: entered promiscuous mode
[ 1738.799651] br0: port 1(dummy0) entered blocking state
[ 1738.799684] br0: port 1(dummy0) entered forwarding state
[ 1738.979202] dummy0: left allmulticast mode
[ 1738.979273] dummy0: left promiscuous mode
[ 1738.979358] br0: port 1(dummy0) entered disabled state