[138375] in North American Network Operators' Group
Re: Real World NAT64 deployments
daemon@ATHENA.MIT.EDU (Owen DeLong)
Fri Mar 4 00:45:40 2011
From: Owen DeLong <owen@delong.com>
In-Reply-To: <AANLkTinVjc0G3y+Shpt5AR+kfadw7WgcfaTis-AQSZkf@mail.gmail.com>
Date: Thu, 3 Mar 2011 21:41:05 -0800
To: William Herrin <bill@herrin.us>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Mar 3, 2011, at 1:54 PM, William Herrin wrote:
> On Thu, Mar 3, 2011 at 3:41 PM, Hammer <bhmccie@gmail.com> wrote:
>> I need a cheat sheet.
>>
>> nat64
>> 6to4nat
>> 6in4nat
>> etc...
>
> 6to4 and 6in4 are not NAT. They're tunnels (VPNs) that allow two IPv6
> nodes to talk to each other via an IPv4 backbone.
>
> nat64 is NAT. It allows IPv6 endpoints to communicate with IPv4 endpoints.
>
> nat44 is the IPv4 NAT you're used to.
> nat444 is carrier NAT (translated once by the customer and once again
> by the ISP, get it?)
>
>
More accurately:
NAT44 is consumer NAT you're used to.
LSN/CGN is NAT at the carrier level.
DS-LITE is native IPv6 with private IPv4 tunneled over IPv6 to reach
an LSN/CGN for IPv4 connectivity.
NAT444 is NAT44 + LSN/CGN
Owen
