justbits
More fiber than ATT can handle
Premium
join:2003-01-08
Chicago, IL
 ·AT&T Midwest
| reply to IPv6
Re: NAT needed if when IPv6 when everybody uses it?
NAT is not required for IPv6. Absolutely every device in existence can have a unique IPv6 address. To make customers feel like there is an added value to a particular IPv6 network router, router software might provide something like NAT in an IPv6 world to maybe anonymize Internet access or make local network management easier in some way. But, there is no definite need or requirement to implement the equivalent of NAT in IPv6. IPv6 solves the problems that NAT in IPv4 solves. But still, NAT in IPv6 would probably not really be NAT, since it could be implemented by defining a bunch of static routes. Setting up a bunch of static routes dynamically in IPv6 kinda defeats the purpose of IPv6's dynamic router advertisment and dynamic address assignment abilities. In fact, someone implementing port mapping or IPv6 address mapping, IPv4 NAT kind of things, would probably introduce incompatibilities for IPv6 software that is not expecting any port mapping or address mapping to take place in an IPv6 world. |
