[ 1738.271878] br0: port 1(dummy0) entered blocking state
[ 1738.271932] br0: port 1(dummy0) entered disabled state
[ 1738.271962] dummy0: entered allmulticast mode
[ 1738.272018] dummy0: entered promiscuous mode
[ 1738.275493] br0: port 1(dummy0) entered blocking state
[ 1738.275568] br0: port 1(dummy0) entered forwarding state
[ 1738.522070] dummy0: left allmulticast mode
[ 1738.522120] dummy0: left promiscuous mode
[ 1738.522213] br0: port 1(dummy0) entered disabled state