[ 1909.084010] br0: port 1(dummy0) entered blocking state
[ 1909.084047] br0: port 1(dummy0) entered disabled state
[ 1909.084086] dummy0: entered allmulticast mode
[ 1909.084138] dummy0: entered promiscuous mode
[ 1909.087705] br0: port 1(dummy0) entered blocking state
[ 1909.087738] br0: port 1(dummy0) entered forwarding state
[ 1909.356227] dummy0: left allmulticast mode
[ 1909.356267] dummy0: left promiscuous mode
[ 1909.356300] br0: port 1(dummy0) entered disabled state