[ 1952.616338] br0: port 1(dummy0) entered blocking state
[ 1952.616409] br0: port 1(dummy0) entered disabled state
[ 1952.616477] dummy0: entered allmulticast mode
[ 1952.616562] dummy0: entered promiscuous mode
[ 1952.619857] br0: port 1(dummy0) entered blocking state
[ 1952.619891] br0: port 1(dummy0) entered forwarding state
[ 1952.831309] dummy0: left allmulticast mode
[ 1952.831335] dummy0: left promiscuous mode
[ 1952.831365] br0: port 1(dummy0) entered disabled state