[ 1848.032789] br0: port 1(dummy0) entered blocking state
[ 1848.032877] br0: port 1(dummy0) entered disabled state
[ 1848.032949] dummy0: entered allmulticast mode
[ 1848.033035] dummy0: entered promiscuous mode
[ 1848.036754] br0: port 1(dummy0) entered blocking state
[ 1848.036789] br0: port 1(dummy0) entered forwarding state
[ 1848.307248] dummy0: left allmulticast mode
[ 1848.307281] dummy0: left promiscuous mode
[ 1848.307308] br0: port 1(dummy0) entered disabled state