Differences between OSPFv3 and OSPFv2

1. Configured using interface command
2. Advertising multiple networks on an interface
3. OSPFv3 RID must be set
4. Flooding scope (link-local, area, AS)
5. Multiple instance per link
6. Source packets from link-local address (except virtual link)
7. Authentication using AH / ESP
8. New LSA Types:

1. Intra-Area Prefix LSA (Type 9)
2. Link LSA (Type 8)
1. Router LSA can be split across multiple LSAs; Link State ID in LSA header is a fragment ID

http://academy.itu.int/moodle/pluginfile.php/38185/mod_resource/content/1/4%20-%20OSPFv3.pdf