In my experience (and as this article suggests), Microsoft operating systems have always been really vulnerable to flooding, even over IPv4. Malformed UDP packets to port 53 (DNS) at about 20-30k packets/sec instantly would lock up a windows box and prevent it from successfully rebooting. This was one of the preferred methods for the wargames that were played for bandwidth over the shared housing network for Microsoft Research interns in China a few years back.