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Re: [pcp] PREFIX64 PCP Option for NAT64: draft-boucadair-pcp-nat64-prefix64-option

<teemu.savolainen@nokia.com> Fri, 07 September 2012 07:15 UTC

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From: teemu.savolainen@nokia.com
To: mohamed.boucadair@orange.com, simon.perreault@viagenie.ca
Thread-Topic: [pcp] PREFIX64 PCP Option for NAT64: draft-boucadair-pcp-nat64-prefix64-option
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Date: Fri, 07 Sep 2012 07:14:58 +0000
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Cc: pcp@ietf.org
Subject: Re: [pcp] PREFIX64 PCP Option for NAT64: draft-boucadair-pcp-nat64-prefix64-option
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Just quick comment also for PCP mailing (I sent separate email also to behave) - maybe we need to cross post if this discussion extends.

The PCP may be fine way to learn Pref64::/n, but I doubt it is possible to generalize PCP to be always present *and* telling Pref64::/n when there is NAT64. I.e. PCP would be similar as DHCPv6 in its pros/cons (as listed in draft-ietf-behave-nat64-learn-analysis) - am I right?

I.e. we need the heuristic to have a general way to find out Pref64::/n, as we cannot count PCP to be always deployed with NAT64.

Best regards,

        Teemu

> -----Original Message-----
> From: pcp-bounces@ietf.org [mailto:pcp-bounces@ietf.org] On Behalf Of ext
> mohamed.boucadair@orange.com
> Sent: 07. syyskuuta 2012 08:26
> To: Simon Perreault
> Cc: pcp@ietf.org
> Subject: Re: [pcp] PREFIX64 PCP Option for NAT64: draft-boucadair-pcp-
> nat64-prefix64-option
>
> Hi Simon,
>
> Perhaps it is too late to ask for including it in the analysis draft.
> I see another place where we can ask for including it is: 464xlat v6op draft.
>
> Cheers,
> Med
>
> >-----Message d'origine-----
> >De : Simon Perreault [mailto:simon.perreault@viagenie.ca]
> >Envoyé : jeudi 6 septembre 2012 17:29
> >À : BOUCADAIR Mohamed OLNC/NAD/TIP
> >Cc : pcp@ietf.org
> >Objet : Re: [pcp] PREFIX64 PCP Option for NAT64:
> >draft-boucadair-pcp-nat64-prefix64-option
> >
> >Le 2012-09-06 11:04, mohamed.boucadair@orange.com a écrit :
> >> Med: I'm open to evaluate which approach is better: new opcode vs.
> >> new option. We need first to agree this is valid problem to solve.
> >
> >There is clearly a need to discover the NAT64 prefix:
> >draft-ietf-behave-nat64-learn-analysis
> >draft-ietf-behave-nat64-discovery-heuristic
> >
> >Note that the analysis draft does not consider PCP. Maybe it should.
> >Looking at the list of pros and cons for DHCPv6, PCP would be
> >different, and better in some aspects.
> >
> >Personally I would much prefer using PCP than the heuristic when PCP is
> >available.
> >
> >Simon
> >--
> >DTN made easy, lean, and smart --> http://postellation.viagenie.ca
> >NAT64/DNS64 open-source        --> http://ecdysis.viagenie.ca
> >STUN/TURN server               --> http://numb.viagenie.ca
> >
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