> I appreciate that, and agree that the case for stateless A+P mapping is
> clearer for DSL and optical fibers than for 3GPP

There are other 3GPP operators who favor using stateless A+P mapping, so I 
would shy away from the above agreement. Of course, different operators have 
different constraints that make them favor one or the other solution, as you 
rightly said. 

Cheers,
Rajiv


> -----Original Message-----
> From: [email protected] [mailto:[email protected]] On Behalf
> Of Rémi Després
> Sent: Monday, August 01, 2011 11:25 AM
> To: Cameron Byrne
> Cc: Softwires-wg; Paco Cortes; Wojciech Dec (wdec)
> Subject: Re: [Softwires] 3gpp related comments on draft-dec-stateless-4v6-02
> 
> Cameron,
> 
> Thanks for the clarification.
> More below.
> 
> 
> 
> Le 1 août 2011 à 16:33, Cameron Byrne a écrit :
> ...
> 
>       > Some providers may indeed prefer to have only a stateless solution,
> especially in for DSL networks where ISP's provide CPE's, but there is no
> technical reason preventing both solutions to coexist
> 
> ...
> 
> 
>       Many, if not most, 3gpp users get rfc1918 or bogon public addresses
> today.  Giving my users public addresses using 4v6 stateless probably does not
> make sense for me or many similar mobile operators. ... there are not enough
> public address to give these users (growth through 2015) each 2000 ports.
> 
> I don't se a significant disagreement here.
> 
> If you have an overwhelming need for dynamic port sharing, it has to be faced,
> and you will go for CGN's. I don't argue against this.
> 
> Some other operators may however have different constraints, and should be
> permitted to operate whatever simpler solution applies to their case.
> 
> Note that one can expect that in 2015 users should work mostly, if not
> exclusively in IPv6, so that their need should be well well below 2000 IPv4
> ports for each.
> 
> 
>       This is just a 3gpp data point, since the draft chooses to include 3gpp
> as motivation.
> 
> I appreciate that, and agree that the case for stateless A+P mapping is
> clearer for DSL and optical fibers than for 3GPP
> 
> 
> Regards,
> RD
> 
> 

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