Re: [v6ops] reclassify 464XLAT as standard instead of info - double stack coexistence

[JORDI PALET MARTINEZ <[e-mail]>]

Maybe you’re not there, but operators live in a world where they don’t have any more IPv4 addresses, so double-stack is over in the access networks. However, there are devices and apps (in both cellular/tethering and non-cellular), that are IPv4-only, so user networks/LANs, need some transition support to make IPv4 transparently available end-to-end.

Last week I did a presentation and I was making a joke:

- I’ve been told that the only secure thing in this life is death … well not anymore, some scientifics said they are close to find the way avoid death … So. the new “for sure” thing in this life, is that we are going to an IPv6-only world (and I’m referring here to access networks, maybe even some core/distribution networks).

Saludos,
Jordi
 

-----Mensaje original-----
De: v6ops <[e-mail]> en nombre de Alexandre Petrescu <[e-mail]>
Responder a: <[e-mail]>
Fecha: lunes, 25 de septiembre de 2017, 12:07
Para: Mikael Abrahamsson <[e-mail]>
CC: <[e-mail]>
Asunto: Re: [v6ops] reclassify 464XLAT as standard instead of info - double stack coexistence

    Le 25/09/2017 à 11:53, Mikael Abrahamsson a écrit :
    > On Mon, 25 Sep 2017, Alexandre Petrescu wrote:
    > 
    >> I mean GTPU protocol that uses IPv4 addresses, and carries IPv6 packets
    > 
    > This is not something the end user device sees or cares about.
    
    But the end-user device connects to a network, and you claim that 
    network is IPv6-only.
    
    You claim that because there are networks that are IPv6-only then 
    devices must run CLAT.
    
    But what is "IPv6-only networks"?  Do they use IPv4 though?
    
    > Why are 
    > you bringing this up?
    
    Because I need to understand whether the APNs dedicated to CLAT run 
    IPv6-only.  Do these networks do GTP-v4?  And PDP type IPv4-IPv6?
    
    One would like to have coherence between IPv4, IPv6, APN type, PDP type, 
    encapsulations, translations.
    
    The ideal is "double stack" - no encap, no translation, no IN A in UDPv6 
    packets, no IN AAAA in UDPv4 packets, and PDP type v4v6.
    
    Alex
    
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