NPTv6
IPv6-to-IPv6 Network Prefix Translation (NPTv6) performs
a stateless, static translation of one IPv6 prefix to another IPv6
prefix (port numbers are not changed). There are four primary benefits
of NPTv6:
- You can prevent the asymmetrical routing problems that result
from Provider Independent addresses being advertised from multiple datacenters.
- NPTv6 allows more specific routes to be advertised so that return
traffic arrives at the same firewall that transmitted the traffic.
- Private and public addresses are independent; you can change
one without affecting the other.
- You have the ability to translate Unique Local Addresses to globally
routable addresses.
This topic builds on a basic understanding of NAT. You should
be sure you are familiar with
NAT concepts
before configuring NPTv6.
