This Internet Draft specifies the security implications of predictable fragment identification values in IPv6. It primarily focuses on countermeasures and mitigations.
You can download it from the following link: https://packetstormsecurity.com/files/download/119655/draft-gont-6man-predictable-fragment-id-03.txt
Source: https://packetstormsecurity.com/files/119655/IETF-I-D-On-Fragmentation-Related-Security-Issues-Revision-03.html