[ 1919.113359] br0: port 1(dummy0) entered blocking state
[ 1919.113435] br0: port 1(dummy0) entered disabled state
[ 1919.113500] dummy0: entered allmulticast mode
[ 1919.113586] dummy0: entered promiscuous mode
[ 1919.117206] br0: port 1(dummy0) entered blocking state
[ 1919.117235] br0: port 1(dummy0) entered forwarding state
[ 1919.387361] dummy0: left allmulticast mode
[ 1919.387402] dummy0: left promiscuous mode
[ 1919.387438] br0: port 1(dummy0) entered disabled state