[IPv6]Re: Reclaiming fec0::/10 (I-D Action: draft-templin-6man-mla-01.txt)

[Brian E Carpenter <[e-mail]>]

There's one statement (well, a whole section) in RFC 3879 that
is certainly not obsolete:

"Site is an Ill-Defined Concept"

RFC 4193 tackles this problem in two statements:

"The default behavior of exterior routing protocol sessions between
administrative routing regions must be to ignore receipt of and not
advertise prefixes in the FC00::/7 block."

"At the present time, AAAA and PTR records for locally assigned local
IPv6 addresses are not recommended to be installed in the global DNS."

Any reassignment of fec0::/10 would need to do the same.

Regards
    Brian Carpenter

On 22-May-24 03:50, Templin (US), Fred L wrote:
> Hi, regarding this debate about the various IPv6 prefixes that may or may not be used
> for IPv6 MANET Local Addresses (MLAs), a simple and obvious answer is why not just
> reclaim the prefix fec0::/10 (formerly site-local and deprecated by RFC3879)?
> 
> This new draft version therefore requests reinstatement of fec0::/10 in a new role
> as the top-level prefix for IPv6 MLAs while rendering RFC3879 obsolete.
> 
> Fred
> 
> -----Original Message-----
> From: [e-mail] <[e-mail]>
> Sent: Tuesday, May 21, 2024 8:42 AM
> To: [e-mail]
> Subject: I-D Action: draft-templin-6man-mla-01.txt
> 
> Internet-Draft draft-templin-6man-mla-01.txt is now available.
> 
>     Title:   IPv6 MANET Local Addresses (MLAs)
>     Author:  Fred L. Templin
>     Name:    draft-templin-6man-mla-01.txt
>     Pages:   7
>     Dates:   2024-05-21
> 
> Abstract:
> 
>     Mobile Ad-hoc NETworks (MANETs) present an interesting challenge for
>     IPv6 addressing due to the indeterminant neighborhood properties of
>     MANET interfaces.  MANET routers must assign an IPv6 address to each
>     MANET interface that is both unique and routable within the MANET but
>     must not be forwarded to other networks.  MANET routers must be able
>     to assign self-generated addresses when there is no infrastructure
>     present on the link that can delegate topology-relative IPv6
>     addresses or prefixes.  This document therefore specifies a means for
>     MANET routers to generate and assign MANET Local Addresses (MLAs).
> 
> The IETF datatracker status page for this Internet-Draft is:
> https://datatracker.ietf.org/doc/draft-templin-6man-mla/
> 
> There is also an HTMLized version available at:
> https://datatracker.ietf.org/doc/html/draft-templin-6man-mla-01
> 
> A diff from the previous version is available at:
> https://author-tools.ietf.org/iddiff?url2=draft-templin-6man-mla-01
> 
> Internet-Drafts are also available by rsync at:
> rsync.ietf.org::internet-drafts
> 
> 
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