Re: [nat66] Fwd: New Version Notification - draft-mrw-nat66-08.txt

[Keith Moore <[e-mail]>]

On Mar 2, 2011, at 4:03 PM, Brian E Carpenter wrote:

> On 2011-03-03 09:30, S.P.Zeidler wrote:
> ...
>> Which applications will have trouble with address stability and
>> provider independence, thus requiring you to make the benefits of NPTv6
>> line up with the applications you want to use??
> 
> The usual ones - those that for whatever reason have explicit
> dependency on the IP address of the peer. We've known for 15 years
> that this is bad design, but it hasn't stopped us doing it.

Actually, I'd say that we've known for 15 years that having the network alter IP addresses is a bad design, but it hasn't stopped people from doing it.

Application writers have known for about as long that depending on DNS names to work in every instance, and from every location on the Internet, is a bad design.  The widespread use of NATs, coupled with numerous problems in the way DNS is maintained and deployed, mean that there is no single host name or token that an application instance can reliably use to reach a particular peer.

Keith