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Re: [Idr] MP-BGP Extension and the Procedures for IPv4/IPv6 Mapping Advertisement

Ketan Talaulikar <ketant.ietf@gmail.com> Mon, 18 March 2024 22:53 UTC

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From: Ketan Talaulikar <ketant.ietf@gmail.com>
Date: Tue, 19 Mar 2024 04:22:54 +0530
Message-ID: <CAH6gdPzP+qniNAVkztT=QbW3bq4OVJDT4PLruykRUN0ML1G+Ww@mail.gmail.com>
To: Chongfeng Xie <chongfeng.xie@foxmail.com>
Cc: Robert Raszuk <robert@raszuk.net>, Acee Lindem <acee.ietf@gmail.com>, idr <idr@ietf.org>
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Subject: Re: [Idr] MP-BGP Extension and the Procedures for IPv4/IPv6 Mapping Advertisement
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Hi Chongfeng,

You've responded (and I am trimming to focus on that point):


>
> [Chongfeng]:  Double-translation is a popular way for transition to
> IPv6-only, it has been even widely supported by terminal OS, such as IOS
> and Android. Double translation have deployed in the mobile networks of
> multiple operators.  In this case, double-translation is more suitable than
> encapsulation.  From the perspective of network operation, the extension to
> BGP should cover both cases, not only encapsulation, but also translation.
>
>
The wide deployment that you refer to seems to be on end hosts and not
routers which is what is the current proposal. Is that correct? Also, can
you clarify if these "wide deployments" translate from IPv4 Addr A --> IPv6
Addr B --> IPv4 Addr A? Or are they more like IPv4 Addr A --> IPv6 Addr B
--> IPv4 Addr C (more like NAT)?

Thanks,
Ketan



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