Re: [Softwires] comments on draft-carpenter-softwire-sample-00

Hi Brian, 

> -----Original Message-----
> From: softwires-bounces@ietf.org 
> [mailto:softwires-bounces@ietf.org] On Behalf Of Brian E Carpenter
> Sent: Monday, September 27, 2010 1:17 PM
> To: WashamFan
> Cc: softwires@ietf.org
> Subject: Re: [Softwires] comments on 
> draft-carpenter-softwire-sample-00
> 
> Hi,
> 
> On 2010-09-27 21:05, WashamFan wrote:
> > Hi,
> > 
> > It says,
> > 
> >    The SAMPLE server will act as an IPv6 router.  In the 
> simplest case,
> >    it will forward all IPv6 packets to a default route, except those
> >    whose destination address lies within the PSAMPLE 
> prefix, which will
> >    be encapsulated and sent towards the host (CPE) and port 
> indicated by
> >    the V4ADDR and PN values.
> > 
> > 
> > I think it is not appropriate to assume NAT traversal without
> > relay can be always successful. 
> 
> I don't understand your comment. If you have a NAT that you cannot
> traverse with UDP, you have many other problems, not just a lack
> of IPv6 connectivity.
> 
> 
> > Hairpinning might be always used
> > for simplicity.
> 
> Yes, that is the SAMPLE model. And it's a discussion for the
> community whether or not this is acceptable.
> 
> > 
> > I'd like to know the status of the draft, is the WG pursuing this
> > work?
> 
> There are three drafts aiming at the same problem, SAMPLE,
> draft-lee-softwire-6rd-udp, and draft-despres-softwire-6rdplus.

And then there is IRON, which already incorporates the
SAMPLE approach as a solid story for NAT traversal to
compliment its many other desireable attributes.

Thanks - Fred
fred.l.templin@boeing.com

> Please hold your breath, there's hope of a joint proposal
> from several authors within a few days.
> 
>    Brian
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