[AfrIPv6-Discuss] AfrIPv6-Discuss Digest, Vol 149, Issue 1

Mon Mar 11 18:17:00 UTC 2019

Responding below, in-line, and numbered the cases.

I think I’m right, but happy to discuss/clarify!

Regards,

Jordi

De: Lee Howard <lee.howard at retevia.net>
Responder a: IPv6 in Africa Discussions <afripv6-discuss at afrinic.net>
Fecha: lunes, 11 de marzo de 2019, 19:03
Para: <afripv6-discuss at afrinic.net>
Asunto: Re: [AfrIPv6-Discuss] AfrIPv6-Discuss Digest, Vol 149, Issue 1

If it is an IPv6 flow, it does not use the CLAT function in the handset. It might use a NAT64 function at the provider edge.
Let’s say if the source app is IPv6, using DNS64, it will be an IPv6-only flow in the operator network and the NAT64 will be used only if the destination is IPv4-only.
If it is an IPv4 flow, the handset translates from IPv4 to IPv6 (the CLAT function). My guess - and it's only speculation - is that the handset takes a few milliseconds to do this for each packet. The flow might also use a NAT64 function at the provider edge.
If the source app is IPv4-only, the CLAT will do stateless NAT46 (how this is done may depend on the implementation). If it is done “full stateless” I guess is much faster than a NAT44 then a NAT46. In this case, it will always use NAT64, unless we work on this (case for IPv4-only SmartTVs):

https://datatracker.ietf.org/doc/draft-palet-v6ops-464xlat-opt-cdn-caches/?include_text=1

If we work on solving this issue, the NAT64 doesn’t need to be used! And is not too complex, I think … EAMT already exist for that.
If it was an IPv4-only network or dual-stack network, there's no CLAT, only NAT at the provider edge.
Depends on the deployment model. It may be only NAT at the CPE, or NAT at the CPE and CGN, so we have NAT444 …

But in this case (3), if the destination is an IPv6-only datacenter (Facebook is a simple example), you have also NAT446 at the datacenter … (it may be just NAT46). There are different ways to do SIIT-DC or other equivalent solutions.

I'm not sure I'm right, but if I'm wrong, I want to be clear about what I'm wrong about.

Lee

On 3/11/19 1:23 PM, JORDI PALET MARTINEZ via AfrIPv6-Discuss wrote:

Hi Lee,

I’m not sure to catch what you mean.

If it is an IPv6 flow, will not go thru the CLAT. If it is an IPv4 flow, then it will be the same than an IPv4 flow without a CLAT, but with NAT. Anything different it is a bad implementation probably …

Regards,

Jordi

De: Lee Howard <lee.howard at retevia.net>
Responder a: IPv6 in Africa Discussions <afripv6-discuss at afrinic.net>
Fecha: lunes, 11 de marzo de 2019, 15:38
Para: <afripv6-discuss at afrinic.net>
Asunto: Re: [AfrIPv6-Discuss] AfrIPv6-Discuss Digest, Vol 149, Issue 1

On 3/10/19 3:24 PM, Sanoussi Baahe Dadde wrote:

So what is the advantage of using IPv6 in term of speed as compare with IPv4?

I recently listed all of the measurements I could find. https://www.retevia.net/fast/

In Africa on average, IPv6 is 24ms faster than IPv4. That can mean a significant difference in how long a web page takes to load. The APNIC data set is pretty small, though, and the performance improvement might just mean that the "Happy Eyeballs" algorithm only lets IPv6 work when it's faster: https://stats.labs.apnic.net/v6perf/XB 

I don't know how African mobile providers have deployed IPv6, but I compared some American and European mobile providers, and there's a correlation between 464xlat and slower IPv4. My guess is that Android handsets are a little slow when doing CLAT. https://twitter.com/WLeeCoyote/status/1102906933739249664

Lee

On Sun, Mar 10, 2019, 13:00 <afripv6-discuss-request at afrinic.net> wrote:

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Today's Topics:

   1. Re: AfrIPv6-Discuss Digest, Vol 148, Issue 3 (kolawole Adewale)

----------------------------------------------------------------------

Message: 1
Date: Sun, 10 Mar 2019 03:58:38 +0100
From: kolawole Adewale <harnthny at gmail.com>
To: afripv6-discuss at afrinic.net
Subject: Re: [AfrIPv6-Discuss] AfrIPv6-Discuss Digest, Vol 148, Issue
        3
Message-ID:
        <CAH9rA-oyUmw4TYSuebPogvH3m=Y-=9fwJ9+RB2x-TatWu9Xm8Q at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

Greetings from Nigeria,

The survey is a good Initiative from AFRINIC, the outcome of the survey and
the training programme will go a long way to improve Internet development
in Africa.

Warm regards,

Idowu.

On 19 Feb 2019 13:00, <afripv6-discuss-request at afrinic.net> wrote:
>
> Send AfrIPv6-Discuss mailing list submissions to
>         afripv6-discuss at afrinic.net
>
> To subscribe or unsubscribe via the World Wide Web, visit
>         https://lists.afrinic.net/mailman/listinfo/afripv6-discuss
> or, via email, send a message with subject or body 'help' to
>         afripv6-discuss-request at afrinic.net
>
> You can reach the person managing the list at
>         afripv6-discuss-owner at afrinic.net
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of AfrIPv6-Discuss digest..."
>
>
> Today's Topics:
>
>    1. Re: AFRINIC Internet Measurement Awareness Survey (APH)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 18 Feb 2019 17:06:13 +0300
> From: APH <pascal at irenala.edu.mg>
> To: afripv6-discuss at afrinic.net
> Subject: Re: [AfrIPv6-Discuss] AFRINIC Internet Measurement Awareness
>         Survey
> Message-ID: <7937a509-3fcc-dc29-068e-54856b851c94 at irenala.edu.mg>
> Content-Type: text/plain; charset="utf-8"; Format="flowed"
>
> Dear Amreesh,
>
> Our NREN full the survey? of Internet Mesurement. ( NREN Malagasy in
> Madagascar )
>
> I think that other participates
>
> regard,
>
> --
>
>
> *Pascal* Heriliva ANDRIANISA
> Webmaster i RENALA
> *R*esearch and *E*ducation *N*etwork for *A*cademic and *L*earning
> *A*ctivities - http://www.irenala.edu.mg/
> Porte 201 - Minist?re de l'Enseignement Sup?rieur et de la Recherche
> Scientifique - Fiadanana
> GSM :+261 (0) 32 46 680 29?? |??? +261 (0) 34 30 680 29
>
>
> Le 2019-02-04 ? 10:17, Nico Schottelius a ?crit?:
> > Good morning Amreesh,
> >
> > greetings from Europe. I was wondering whether you will publish the
> > results of the survey afterwards?
> >
> > We are running an IPv6 first data center in Switzerland and we are
> > conducting similar surveys on Twitter (@ungleich) at the moment to get a
> > better impression on how to grow the IPv6 adoption.
> >
> > Best regards,
> >
> > Nico
> >
> > Amreesh Phokeer <amreesh at afrinic.net> writes:
> >
> >> {Apologies for cross-posting}
> >>
> >> Dear colleagues,
> >>
> >> AFRINIC has launched a survey with the aim of assessing the current
status of Internet measurement in Africa.
> >>
> >> Your responses will help AFRINIC  understand the available measurement
infrastructure on the continent as well as the gap in the infrastructure
and the relevant skills that need to be filled. AFRINIC will use the
responses as guide in building Internet measurement programmes to train
network operators, regulators, end users, and other stakeholders in the
forthcoming summits, conferences, and *nog meetings across the continent.
> >>
> >> We invite you to take the survey  available in both English (
https://survey.afrinic.net/index.php/survey/index/sid/634362/newtest/Y/lang/en)
and French (
https://survey.afrinic.net/index.php/survey/index/sid/634362/newtest/Y/lang/fr
).
> >>
> >> The deadline for filling the survey is 28 February 2018.
> >>
> >> Please read more on the benefits and the reasons behind the need for
assessing the current status of Internet measurement in Africa from our
blog here.
https://www.afrinic.net/blog/421-africa-internet-measurement-awareness-survey
> >>
> >> ????????????????.
> >>
> >> Chers coll?gues,
> >>
> >> AFRINIC a lanc? un sondage dans le but d'?valuer l'?tat actuel de la
m?trologie des r?seaux en Afrique. Vos r?ponses aideront AFRINIC ?
comprendre l'infrastructure de la m?trologie disponible sur le continent,
ainsi que les lacunes dans l?infrastructure et les lacunes au niveau des
comp?tences.
> >>
> >> Les r?sultats de ce sondage servira ? ?laborer des programmes de
m?trologie des r?seaux destin?s ? former les op?rateurs de r?seau, les
r?gulateurs, les utilisateurs finaux et d'autres partenaires lors des
prochains sommets, conf?rences et r?unions ? travers le continent.
> >>
> >> Nous vous invitons ? r?pondre au sondage qui est disponible en anglais
(
https://survey.afrinic.net/index.php/survey/index/sid/634362/newtest/Y/lang/en)
et en fran?ais (https: // survey .afrinic.net / index.php / survey / index
/ sid / 634362 / newtest / Y / lang / fr).
> >>
> >> La date limite pour remplir le questionnaire est 28 f?vrier 2018.
> >>
> >> Consultez notre blog ici pour en savoir plus sur les avantages et les
raisons de la n?cessit? d'?valuer l'?tat actuel de la m?trologie des
r?seaux en Afrique.
https://www.afrinic.net/blog/421-africa-internet-measurement-awareness-survey
> >>
> >>
> >>
> >> _______________________________________________
> >> AfrIPv6-Discuss mailing list
> >> AfrIPv6-Discuss at afrinic.net
> >> https://lists.afrinic.net/mailman/listinfo/afripv6-discuss
> >
> > --
> > Your Swiss, Open Source and IPv6 Virtual Machine. Now on
www.datacenterlight.ch.
> >
> > _______________________________________________
> > AfrIPv6-Discuss mailing list
> > AfrIPv6-Discuss at afrinic.net
> > https://lists.afrinic.net/mailman/listinfo/afripv6-discuss
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