RFC 5549 - IPv4 Routes with IPv6 next-hop - Does it really exists?

Wed Jul 29 11:23:32 UTC 2020

Long time ago I tried it out:

https://blog.acostasite.com/2013/02/publicar-prefijos-ipv4-sobre-una-sesion.html

https://blog.acostasite.com/2013/02/publicando-prefijos-ipv6-sobre-sesiones.html

I did not like, difficult troubleshooting in case something goes wrong 
(however I can understand it's a nice feature to have and in might be 
useful in some scenarios).

But you are right I do not know much about networks doing it, I also 
would like hear about it.

Alejandro,

On 7/29/20 1:51 AM, Douglas Fischer wrote:
> Let's just jump all the arguing about lack of IPv4, the need of IPv6, 
> and etc...
>
> I must confess that I don't know all the RFCs.
> I would like it, but I don't!
>
> And today, I reached on https://tools.ietf.org/html/rfc5549
>
> I knew that was possible to transfer v4 routes over v6 BGP sessions, 
> or v6 routes over v4 BGP sessions.
> But I got surprised when I saw this youtube vídeo of AMS-IX guys 
> considering use a v6 only Lan, and doing v6 next-hops to v4 routes.
> https://www.youtube.com/watch?v=uJOtfiHDCMw
>
> Well... I guess that idea didn't go to production.
>
>
>
> But the questions are:
> There is any network that really implements RFC5549?
> Can anyone share some information about it?
>
> -- 
> Douglas Fernando Fischer
> Engº de Controle e Automação
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