This is similar to IP fragmentation attack
. By fragmenting IP datagram into smaller pieces, one kind of DOS attack is done, as far as I know. You can google it. This is the 4th result in google but [OffensiveSecurity][1]OffensiveSecurity is generally one of the best in security issues.
Hope this helps [1]: http://www.offensive-security.com/wifu/Fragmentation-Attack-in-Practice.pdf