Re: [v6ops] Which IPv4aaS mechanisms should CE routers implement first?

If you count cellular, clearly the winner is 464XLAT (there are several ISPs that offer mobile broadband), in terms of number of subscribers using it vs all the other transition technologies added together.

Otherwise, DS-Lite is probably the one that has been implemented mostly because the other ones didn’t exist at that time. I’m not seeing a big penetration of MAP-T/E neither lw4o6.

Also take a look at:

https://datatracker.ietf.org/doc/draft-ietf-v6ops-transition-comparison/

Regards,

Jordi

@jordipalet

El 24/11/21 3:26, "v6ops en nombre de Lorenzo Colitti" <v6ops-bounces@ietf.org en nombre de lorenzo=40google.com@dmarc.ietf.org> escribió:

Hi all,

Is there any data on what IPv4aaS transition mechanisms are deployed by ISPs today? I was approached by a router vendor asking me "how they should provide IPv6-only" and I was looking for data on which mechanisms are most common.

Official IETF guidance in RFC 8585 and 8026 is "do all of them and let ISPs decide, have a nice day", but that's not very helpful to a development team with finite engineering resources and low margins. In particular, it's not helpful to vendors of routers that are updatable and that can thus credibly claim that they can deliver other mechanisms via software update. Those vendors could reasonably argue that it's better for everyone if they launch the most common mechanism(s) first, and then deliver the others in software updates.

It seems like reasonable implementation guidance would be to request OPTION_S46_PRIORITY and parse it, but only initially implement one or two of the mechanisms and leave the others for a future release. If a router did this, what mechanisms should it implement first? MAP-E?

Cheers,

Lorenzo

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