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Re: [spring] Typo correction Re: Question from SPRING regarding draft-filsfilscheng-spring-srv6-srh-compression

Carsten Bormann <cabo@tzi.org> Thu, 14 October 2021 10:52 UTC

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From: Carsten Bormann <cabo@tzi.org>
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Date: Thu, 14 Oct 2021 12:52:41 +0200
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Subject: Re: [spring] Typo correction Re: Question from SPRING regarding draft-filsfilscheng-spring-srv6-srh-compression
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On 13. Oct 2021, at 22:26, Brian E Carpenter <brian.e.carpenter@gmail.com> wrote:
> 
> Including semantics *of any kind* in an IP address is a very fundamental
> change to the concept of IP. I may be wrong, but I'm not aware that any
> RFCs prior to SRV6 have done this, and the founding reference for what 
> an address *is* still seems to be IEN19 [1].

One reason may be that you don’t need an RFC to do that.

I don’t have the references handy, but people have been allocating a whole /64 to a single end-system (*) for quite a while.

E.g., see
https://serverfault.com/questions/936848/adding-a-whole-ipv6-64-block-to-a-server-using-netplan
for a discussion on how to do this with Linux.

The IID then becomes “Semantics” (like the port number already is).

Grüße, Carsten

(*) Not exactly a “host” any more, so maybe there is room for an RFC here…

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