Re: [sunset4] Stateless NAT44 vs MAP/4rd

The draft is quite interesting
One question for clarification

Is the mapping between Internal Prefix & External Prefix  1:1 or N:1 ?

BRs

Gang

2012/7/17, Simon Perreault <simon.perreault@viagenie.ca>:
> On 07/11/2012 12:44 PM, Dan Wing wrote:
>>> draft-tsou-stateless-nat44-00
>>
>> This seems to be a MAP solution.  But differs from MAP in that it uses
>> an IPv4 network between the subscriber and the ISP's "stateless NAT44"
>> device, whereas MAP uses an IPv6 network between the subscriber and
>> the ISP's "MAP border relay" device.
>
> I think this is a fair comparison.
>
> One advantage of SLNAT44 over MAP is that the necessary changes to the
> CPE are minimal. For example, a vanilla Linux can do SLNAT44 today.
>
> Another advantage of SLNAT44 is simpler provisioning: CPEs don't need to
> have access to all the "mapping rules" for direct communication to work.
> In MAP/4rd, a CPE needs to compute the IPv6 address to which the IPv4
> address it wants to reach is mapped. That's why rules need to be
> downloaded to the CPE. In SLNAT44, you just send the packet directly to
> the IPv4 address you want to reach. There is no overlay network, so no
> rules to be downloaded.
>
> Simplicity! :)
>
> Simon
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