Re: [MEXT] Gateway Initiated Dual-stack lite Support

[Ralph Droms <rdroms at cisco.com>]

Quick question about your draft...

I understand about stitching the tunnels together in a gateway.  In  
the case of DS-lite, there is a NAT function in the DSLTC as well as a  
tunnel concentrator function.  Presumably, that NAT function appeared  
somewhere else in the scenarios you describe in the I-D.  Where is  
that NAT function before the addition of DS-lite and how does DS-lite  
change the NAT function?

- Ralph

On Oct 13, 2009, at 9:27 PM 10/13/09, Sri Gundavelli wrote:

> We have posted a draft on using Gateway Initiated Dual-stack lite  
> approach for IPv6 migration support. Following is the pointer to
> the draft.
>
> http://www.ietf.org/id/draft-gundavelli-softwire-gateway-init-ds-lite-00.txt
>
> The key aspect of this solution is the approach by which we are  
> applying
> dual-stack lite solution to IP mobility architectures. In this gateway
> initiated dual-stack lite mode we are leveraging the mobile tunnel
> by extending it to the CGN, and by using a UE specific softwire for
> session identification.