[c-nsp] ASA for IPv6

[Michael Lee]

Hi,

 Currently I have ASA 5580 with IPv4 NAT setup (public IP outside and RFC
1918 inside), I am considering to run IPv6 with Public IPv6 outside and
Public IPv6 inside (routing mode)

Just wondering there is anything I would need to consider except CPU,
memory and sessions)

Thanks,

~mike