Re: Ipv6 help

[Mark Andrews <marka () isc org>]

How doesn’t it work?  As long as IPv6 is *on* NAT444 + dual stack has the same properties (or better, less PMTUD 
issues) as turning on 464XLAT in the CPE.  Traffic shifts to IPv6 due to hosts preferring IPv6.   You can still disable 
sending RA’s in either scenario.

Mark

> On 26 Aug 2020, at 16:51, JORDI PALET MARTINEZ via NANOG <nanog () nanog org> wrote:
>
> No, this doesn't work
>
> The point your're missing (when I talked before about putting all the costs to make a good calculation of each case 
> and then replacing CPEs become actually cheaper) is that you need more IPv4 addresses in CGN than in NAT64 and 
> further to that, in CGN, your IPv4 pools sooner or later become blocked by PSN (unless you don't have gammers among 
> your customers).
>
> El 25/8/20 22:42, "NANOG en nombre de Brian Johnson" <nanog-bounces+jordi.palet=consulintel.es () nanog org en 
> nombre de brian.johnson () netgeek us> escribió:
>
>    I usually solve this problem by designing for NAT444 and dual-stack. This solves both problems and allows for 
> users to migrate as they are able/need to. If you try and force the change, you will loose users.
>
>
> > On Aug 25, 2020, at 3:15 PM, Brandon Martin <lists.nanog () monmotha net> wrote:
> >
> > On 8/25/20 3:38 PM, JORDI PALET MARTINEZ via NANOG wrote:
> > > This is very common in many countries and not related to IPv6, but because many operators have special configs or 
> > > features in the CPEs they provide.
> >
> > I really, really hate to force users to use my network edge router (I provide the ONT, though, and I provide an edge 
> > router that works and most users do take it), but it can be tough to ensure users have something that supports all 
> > the right modern features and can be configured via standard means.
> >
> > It would be nice if the consumer router industry could get its collective act together and at least come up with 
> > some easy-ish to understand feature support table that customers can match up with their service provider's list of 
> > needs.  The status quo of a list of devices that work right (which is of course often staggeringly short if you're 
> > doing any of these modern transition mechanisms) that needs constant updating and may not be easily available is not 
> > ideal.
> >
> > Heck just having a real, complete list of supported features on the model support page on their website would be an 
> > improvement...
> > -- 
> > Brandon Martin
>
>
>
>
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-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742              INTERNET: marka () isc org