IPv6 fragmentation

Everyone,

I have asked this question before on this list and received no answer,
so I will try again.

I am currently working on a port of the IPv4 connection tracking portion
of Netfilter/iptables to the IPv6 protocol. The port is almost complete, except for fragment handling. I would appreciate a list of actions and functions required to properly defragment and refragment IPv6 packets. I would also appreciate code examples on how to properly parse the IPv6 header chain and return any one header, based upon its code, found in /usr/src/linux/include/net/ipv6.h

Brad