This FAQ answers a few questions about IPv6 on SunOS 5.x (Solaris 2.x).
I hope it's useful
1. What is IPv6? 2. Why do we need it? 3. Is NAT really that bad? 4. ok, so where do I get it from? 5. And how do I set it up? 6. What is the 6bone? 7. How do I connect to it? 8. What goes in /etc/inet/ipnodes? Why don't I need anything in /etc/hostname6.xxx? What about multiple interfaces? How do I set up a tunnel to a pTLA? 10. How do I subnet my networks? 11. Why can't I use a subnet mask bigger than /64? 12. How do I set up an IPv6 router? 13. How do I set up an IPv6 node? 14. Can I run dual IPv4 and IPv6 on the same Solaris server? 15. What about other operating systems? What's available? 16. When will Sun bundle IPv6 support? How stable is the current release of IPv6 for Solaris? Are there any known bugs? Why doesn't getaddrinfo() work properly when I port some Kame software?